81009237 ÷ 939 
We want to figure out the number of times 81009237 can be divided by 939.

On to step 1:
When dividing 8 by 939, we get 0 with a remainder of 8.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 8 and we're left with 8.
Fetch the next digit (1) from the dividend, attach it to 8 and continue: 81 / 939

Advancing to step 2:
939 can be fit into 81 0 times, resulting in a remainder of 81.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 81 and we're left with 81.
Fetch the next digit (0) from the dividend, attach it to 81 and continue: 810 / 939

Step 3:
If we divide 810 by 939, we get 0 and a remainder of 810.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 810 and we're left with 810.
Grab the next digit (0) from the dividend, add it to 810, then carry on: 8100 / 939

Advancing to step 4:
When dividing 8100 by 939, we get 8 with a remainder of 588.
Use 8 as the next digit of our solution. 
Result so far: 8.0
If we subtract 7512 from 8100, we get 588.
Fetch the next digit (9) from the dividend, attach it to 588 and continue: 5889 / 939

Going ahead to step 5:
The number 939 fits into 5889 6 times, leaving a remainder of 255.
Write down 6 as next digit of the result. 
Result so far: 86.0
The remainder is 255 after subtracting 5634 from 5889.
Take the next digit (2) from the dividend and append it to 255, then repeat: 2552 / 939

Moving on to step 6:
939 can be fit into 2552 2 times, resulting in a remainder of 674.
Write down 2 as next digit of the result. 
Result so far: 862.0
Subtract 1878 from 2552 to get 674.
Bring next digit (3) of the dividend behind the 674 and repeat the process: 6743 / 939

Let's proceed to step 7:
The number 939 fits into 6743 7 times, leaving a remainder of 170.
Record the quotient 7 as the next digit in the result. 
Result so far: 8627.0
If we take 6573 away from 6743, we end up with 170.
Include the next digit (7) from the dividend after 170, then repeat: 1707 / 939

Advancing to step 8:
If we divide 1707 by 939, we get 1 and a remainder of 768.
The number 1 becomes the next digit in our result. 
Result so far: 86271.0
Subtract 939 from 1707 to get 768.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7680, and continue the process.

Moving on to step 9:
939 can be fit into 7680 8 times, resulting in a remainder of 168.
Put 8 as the next digit of the answer. 
Result so far: 86271.8
The remainder is 168 after subtracting 7512 from 7680.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1680, and continue the process.

On to step 10:
When dividing 1680 by 939, we get 1 with a remainder of 741.
The number 1 becomes the next digit in our result. 
Result so far: 86271.81
Subtracting 939 from 1680 leaves us with 741.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7410, and continue the process.

Step 11:
939 can be fit into 7410 7 times, resulting in a remainder of 837.
Write down 7 as next digit of the result. 
Result so far: 86271.817
If we subtract 6573 from 7410, we get 837.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8370, and continue the process.

Advancing to step 12:
939 goes into 8370 8 times with a remainder of 858.
Use 8 as the next digit of our solution. 
Result so far: 86271.8178
The remainder is 858 after subtracting 7512 from 8370.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8580, and continue the process.

Going ahead to step 13:
8580 divided by 939 is 9 with a remainder of 129.
The number 9 becomes the next digit in our result. 
Result so far: 86271.81789
Subtract 8451 from 8580 to get 129.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1290, and continue the process.

Going ahead to step 14:
When dividing 1290 by 939, we get 1 with a remainder of 351.
The number 1 becomes the next digit in our result. 
Result so far: 86271.817891
If we take 939 away from 1290, we end up with 351.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3510, and continue the process.

Let's proceed to step 15:
The number 939 fits into 3510 3 times, leaving a remainder of 693.
Record the quotient 3 as the next digit in the result. 
Result so far: 86271.8178913
If we subtract 2817 from 3510, we get 693.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6930, and continue the process.

Going ahead to step 16:
939 goes into 6930 7 times with a remainder of 357.
The next digit of our result is 7. 
Result so far: 86271.81789137
The remainder is 357 after subtracting 6573 from 6930.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3570, and continue the process.

The final result is 86271.81789137 with a remainder of 3.57e-07.