Let's divide 645547 by 51
We're looking to find how many times 51 goes into 645547.

Step 1:
When dividing 6 by 51, we get 0 with a remainder of 6.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 6 and we're left with 6.
Take the next digit (4) from the dividend and append it to 6, then repeat: 64 / 51

Advancing to step 2:
51 can be fit into 64 1 times, resulting in a remainder of 13.
Put 1 as the next digit of the answer. 
Result so far: 1.0
If we subtract 51 from 64, we get 13.
Fetch the next digit (5) from the dividend, attach it to 13 and continue: 135 / 51

Moving on to step 3:
51 can be fit into 135 2 times, resulting in a remainder of 33.
Write down 2 as next digit of the result. 
Result so far: 12.0
Deduct 102 from 135 and we're left with 33.
Include the next digit (5) from the dividend after 33, then repeat: 335 / 51

Advancing to step 4:
51 can be fit into 335 6 times, resulting in a remainder of 29.
Put 6 as the next digit of the answer. 
Result so far: 126.0
If we take 306 away from 335, we end up with 29.
Take the next digit (4) from the dividend and append it to 29, then repeat: 294 / 51

Step 5:
If we divide 294 by 51, we get 5 and a remainder of 39.
Use 5 as the next digit of our solution. 
Result so far: 1265.0
Subtracting 255 from 294 leaves us with 39.
Grab the next digit (7) from the dividend, add it to 39, then carry on: 397 / 51

On to step 6:
When dividing 397 by 51, we get 7 with a remainder of 40.
Record the quotient 7 as the next digit in the result. 
Result so far: 12657.0
The remainder is 40 after subtracting 357 from 397.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Going ahead to step 7:
51 can be fit into 400 7 times, resulting in a remainder of 43.
The next digit of our result is 7. 
Result so far: 12657.7
Subtracting 357 from 400 leaves us with 43.
Since there are no more digits in the dividend, we add a zero to the remainder making it 430, and continue the process.

Going ahead to step 8:
The number 51 fits into 430 8 times, leaving a remainder of 22.
Record the quotient 8 as the next digit in the result. 
Result so far: 12657.78
The remainder is 22 after subtracting 408 from 430.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Moving on to step 9:
51 goes into 220 4 times with a remainder of 16.
The number 4 becomes the next digit in our result. 
Result so far: 12657.784
Subtracting 204 from 220 leaves us with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Moving on to step 10:
If we divide 160 by 51, we get 3 and a remainder of 7.
The number 3 becomes the next digit in our result. 
Result so far: 12657.7843
If we take 153 away from 160, we end up with 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Going ahead to step 11:
The number 51 fits into 70 1 times, leaving a remainder of 19.
Write down 1 as next digit of the result. 
Result so far: 12657.78431
Deduct 51 from 70 and we're left with 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Advancing to step 12:
The number 51 fits into 190 3 times, leaving a remainder of 37.
Write down 3 as next digit of the result. 
Result so far: 12657.784313
Subtracting 153 from 190 leaves us with 37.
Since there are no more digits in the dividend, we add a zero to the remainder making it 370, and continue the process.

Let's proceed to step 13:
51 goes into 370 7 times with a remainder of 13.
Record the quotient 7 as the next digit in the result. 
Result so far: 12657.7843137
If we subtract 357 from 370, we get 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Step 14:
51 can be fit into 130 2 times, resulting in a remainder of 28.
Use 2 as the next digit of our solution. 
Result so far: 12657.78431372
Subtract 102 from 130 to get 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

The quotient of the division is 12657.78431372, and the remainder is 2.8e-08.