Let's divide 80918729 by 538
We want to figure out the number of times 80918729 can be divided by 538.

On to step 1:
538 goes into 8 0 times with a remainder of 8.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 8, we end up with 8.
Include the next digit (0) from the dividend after 8, then repeat: 80 / 538

Advancing to step 2:
80 divided by 538 is 0 with a remainder of 80.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 80 to get 80.
Append the next digit (9) from the dividend to 80 and continue with: 809 / 538

Moving on to step 3:
The number 538 fits into 809 1 times, leaving a remainder of 271.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Deduct 538 from 809 and we're left with 271.
Take the next digit (1) from the dividend and append it to 271, then repeat: 2711 / 538

Step 4:
2711 divided by 538 is 5 with a remainder of 21.
Put 5 as the next digit of the answer. 
Result so far: 15.0
Subtract 2690 from 2711 to get 21.
Include the next digit (8) from the dividend after 21, then repeat: 218 / 538

Moving on to step 5:
The number 538 fits into 218 0 times, leaving a remainder of 218.
Record the quotient 0 as the next digit in the result. 
Result so far: 150.0
Subtracting 0 from 218 leaves us with 218.
Take the next digit (7) from the dividend and append it to 218, then repeat: 2187 / 538

Advancing to step 6:
2187 divided by 538 is 4 with a remainder of 35.
Use 4 as the next digit of our solution. 
Result so far: 1504.0
Subtracting 2152 from 2187 leaves us with 35.
Fetch the next digit (2) from the dividend, attach it to 35 and continue: 352 / 538

Moving on to step 7:
538 goes into 352 0 times with a remainder of 352.
The next digit of our result is 0. 
Result so far: 15040.0
If we take 0 away from 352, we end up with 352.
Include the next digit (9) from the dividend after 352, then repeat: 3529 / 538

Going ahead to step 8:
3529 divided by 538 is 6 with a remainder of 301.
Record the quotient 6 as the next digit in the result. 
Result so far: 150406.0
Subtracting 3228 from 3529 leaves us with 301.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3010, and continue the process.

On to step 9:
538 can be fit into 3010 5 times, resulting in a remainder of 320.
Write down 5 as next digit of the result. 
Result so far: 150406.5
The remainder is 320 after subtracting 2690 from 3010.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3200, and continue the process.

Advancing to step 10:
538 goes into 3200 5 times with a remainder of 510.
The number 5 becomes the next digit in our result. 
Result so far: 150406.55
The remainder is 510 after subtracting 2690 from 3200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5100, and continue the process.

After the division, we end up with 150406.55 and a remainder of 0.51.