We're dividing 52579023 by 642 
We want to divide 52579023 by 642.

Step 1:
The number 642 fits into 5 0 times, leaving a remainder of 5.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 5 leaves us with 5.
Append the next digit (2) from the dividend to 5 and continue with: 52 / 642

Step 2:
If we divide 52 by 642, we get 0 and a remainder of 52.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 52 after subtracting 0 from 52.
Grab the next digit (5) from the dividend, add it to 52, then carry on: 525 / 642

Step 3:
The number 642 fits into 525 0 times, leaving a remainder of 525.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 525 and we're left with 525.
Fetch the next digit (7) from the dividend, attach it to 525 and continue: 5257 / 642

On to step 4:
When dividing 5257 by 642, we get 8 with a remainder of 121.
Write down 8 as next digit of the result. 
Result so far: 8.0
Subtract 5136 from 5257 to get 121.
Include the next digit (9) from the dividend after 121, then repeat: 1219 / 642

On to step 5:
The number 642 fits into 1219 1 times, leaving a remainder of 577.
Record the quotient 1 as the next digit in the result. 
Result so far: 81.0
Deduct 642 from 1219 and we're left with 577.
Bring next digit (0) of the dividend behind the 577 and repeat the process: 5770 / 642

Advancing to step 6:
5770 divided by 642 is 8 with a remainder of 634.
Write down 8 as next digit of the result. 
Result so far: 818.0
If we subtract 5136 from 5770, we get 634.
Bring next digit (2) of the dividend behind the 634 and repeat the process: 6342 / 642

Moving on to step 7:
When dividing 6342 by 642, we get 9 with a remainder of 564.
The number 9 becomes the next digit in our result. 
Result so far: 8189.0
Subtract 5778 from 6342 to get 564.
Grab the next digit (3) from the dividend, add it to 564, then carry on: 5643 / 642

On to step 8:
The number 642 fits into 5643 8 times, leaving a remainder of 507.
The number 8 becomes the next digit in our result. 
Result so far: 81898.0
If we take 5136 away from 5643, we end up with 507.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5070, and continue the process.

Let's proceed to step 9:
5070 divided by 642 is 7 with a remainder of 576.
Use 7 as the next digit of our solution. 
Result so far: 81898.7
Subtract 4494 from 5070 to get 576.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5760, and continue the process.

Let's proceed to step 10:
If we divide 5760 by 642, we get 8 and a remainder of 624.
The next digit of our result is 8. 
Result so far: 81898.78
Subtracting 5136 from 5760 leaves us with 624.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6240, and continue the process.

On to step 11:
6240 divided by 642 is 9 with a remainder of 462.
Write down 9 as next digit of the result. 
Result so far: 81898.789
Subtracting 5778 from 6240 leaves us with 462.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4620, and continue the process.

Step 12:
642 can be fit into 4620 7 times, resulting in a remainder of 126.
Record the quotient 7 as the next digit in the result. 
Result so far: 81898.7897
If we take 4494 away from 4620, we end up with 126.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1260, and continue the process.

Advancing to step 13:
1260 divided by 642 is 1 with a remainder of 618.
Put 1 as the next digit of the answer. 
Result so far: 81898.78971
If we take 642 away from 1260, we end up with 618.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6180, and continue the process.

Going ahead to step 14:
6180 divided by 642 is 9 with a remainder of 402.
Put 9 as the next digit of the answer. 
Result so far: 81898.789719
The remainder is 402 after subtracting 5778 from 6180.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4020, and continue the process.

On to step 15:
The number 642 fits into 4020 6 times, leaving a remainder of 168.
The number 6 becomes the next digit in our result. 
Result so far: 81898.7897196
If we subtract 3852 from 4020, we get 168.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1680, and continue the process.

Let's proceed to step 16:
When dividing 1680 by 642, we get 2 with a remainder of 396.
Use 2 as the next digit of our solution. 
Result so far: 81898.78971962
Subtract 1284 from 1680 to get 396.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3960, and continue the process.

The final outcome is 81898.78971962, with a leftover of 3.96e-07.