We're dividing 53771491 by 639 
We want to divide 53771491 by 639.

Going ahead to step 1:
If we divide 5 by 639, we get 0 and a remainder of 5.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 5 after subtracting 0 from 5.
Fetch the next digit (3) from the dividend, attach it to 5 and continue: 53 / 639

Advancing to step 2:
639 goes into 53 0 times with a remainder of 53.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 53, we get 53.
Append the next digit (7) from the dividend to 53 and continue with: 537 / 639

On to step 3:
The number 639 fits into 537 0 times, leaving a remainder of 537.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 537 to get 537.
Include the next digit (7) from the dividend after 537, then repeat: 5377 / 639

Moving on to step 4:
The number 639 fits into 5377 8 times, leaving a remainder of 265.
The number 8 becomes the next digit in our result. 
Result so far: 8.0
The remainder is 265 after subtracting 5112 from 5377.
Fetch the next digit (1) from the dividend, attach it to 265 and continue: 2651 / 639

Going ahead to step 5:
2651 divided by 639 is 4 with a remainder of 95.
Record the quotient 4 as the next digit in the result. 
Result so far: 84.0
The remainder is 95 after subtracting 2556 from 2651.
Fetch the next digit (4) from the dividend, attach it to 95 and continue: 954 / 639

Moving on to step 6:
The number 639 fits into 954 1 times, leaving a remainder of 315.
The next digit of our result is 1. 
Result so far: 841.0
If we take 639 away from 954, we end up with 315.
Grab the next digit (9) from the dividend, add it to 315, then carry on: 3159 / 639

On to step 7:
639 can be fit into 3159 4 times, resulting in a remainder of 603.
Record the quotient 4 as the next digit in the result. 
Result so far: 8414.0
The remainder is 603 after subtracting 2556 from 3159.
Append the next digit (1) from the dividend to 603 and continue with: 6031 / 639

Moving on to step 8:
If we divide 6031 by 639, we get 9 and a remainder of 280.
Use 9 as the next digit of our solution. 
Result so far: 84149.0
Deduct 5751 from 6031 and we're left with 280.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2800, and continue the process.

On to step 9:
639 goes into 2800 4 times with a remainder of 244.
The number 4 becomes the next digit in our result. 
Result so far: 84149.4
Subtract 2556 from 2800 to get 244.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2440, and continue the process.

On to step 10:
If we divide 2440 by 639, we get 3 and a remainder of 523.
Record the quotient 3 as the next digit in the result. 
Result so far: 84149.43
Deduct 1917 from 2440 and we're left with 523.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5230, and continue the process.

Let's proceed to step 11:
The number 639 fits into 5230 8 times, leaving a remainder of 118.
The number 8 becomes the next digit in our result. 
Result so far: 84149.438
Deduct 5112 from 5230 and we're left with 118.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1180, and continue the process.

Let's proceed to step 12:
When dividing 1180 by 639, we get 1 with a remainder of 541.
The next digit of our result is 1. 
Result so far: 84149.4381
The remainder is 541 after subtracting 639 from 1180.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5410, and continue the process.

Moving on to step 13:
639 can be fit into 5410 8 times, resulting in a remainder of 298.
Write down 8 as next digit of the result. 
Result so far: 84149.43818
Subtracting 5112 from 5410 leaves us with 298.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2980, and continue the process.

Going ahead to step 14:
2980 divided by 639 is 4 with a remainder of 424.
Put 4 as the next digit of the answer. 
Result so far: 84149.438184
If we take 2556 away from 2980, we end up with 424.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4240, and continue the process.

On to step 15:
When dividing 4240 by 639, we get 6 with a remainder of 406.
Put 6 as the next digit of the answer. 
Result so far: 84149.4381846
Deduct 3834 from 4240 and we're left with 406.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4060, and continue the process.

Let's proceed to step 16:
If we divide 4060 by 639, we get 6 and a remainder of 226.
Write down 6 as next digit of the result. 
Result so far: 84149.43818466
Subtract 3834 from 4060 to get 226.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2260, and continue the process.

In conclusion, the division gives 84149.43818466 with a balance of 2.26e-07.