81216988 divided by 939 
Let's see how many times 939 fits into 81216988.

Going ahead to step 1:
8 divided by 939 is 0 with a remainder of 8.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 8 after subtracting 0 from 8.
Fetch the next digit (1) from the dividend, attach it to 8 and continue: 81 / 939

Going ahead to step 2:
When dividing 81 by 939, we get 0 with a remainder of 81.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 81, we get 81.
Take the next digit (2) from the dividend and append it to 81, then repeat: 812 / 939

Advancing to step 3:
939 can be fit into 812 0 times, resulting in a remainder of 812.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 812 leaves us with 812.
Bring next digit (1) of the dividend behind the 812 and repeat the process: 8121 / 939

Advancing to step 4:
939 can be fit into 8121 8 times, resulting in a remainder of 609.
Write down 8 as next digit of the result. 
Result so far: 8.0
If we take 7512 away from 8121, we end up with 609.
Bring next digit (6) of the dividend behind the 609 and repeat the process: 6096 / 939

Going ahead to step 5:
The number 939 fits into 6096 6 times, leaving a remainder of 462.
The next digit of our result is 6. 
Result so far: 86.0
The remainder is 462 after subtracting 5634 from 6096.
Fetch the next digit (9) from the dividend, attach it to 462 and continue: 4629 / 939

Step 6:
939 goes into 4629 4 times with a remainder of 873.
Put 4 as the next digit of the answer. 
Result so far: 864.0
If we subtract 3756 from 4629, we get 873.
Include the next digit (8) from the dividend after 873, then repeat: 8738 / 939

On to step 7:
When dividing 8738 by 939, we get 9 with a remainder of 287.
Put 9 as the next digit of the answer. 
Result so far: 8649.0
The remainder is 287 after subtracting 8451 from 8738.
Include the next digit (8) from the dividend after 287, then repeat: 2878 / 939

Advancing to step 8:
When dividing 2878 by 939, we get 3 with a remainder of 61.
The next digit of our result is 3. 
Result so far: 86493.0
If we subtract 2817 from 2878, we get 61.
Since there are no more digits in the dividend, we add a zero to the remainder making it 610, and continue the process.

Going ahead to step 9:
The number 939 fits into 610 0 times, leaving a remainder of 610.
The number 0 becomes the next digit in our result. 
Result so far: 86493.0
Subtract 0 from 610 to get 610.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6100, and continue the process.

On to step 10:
939 can be fit into 6100 6 times, resulting in a remainder of 466.
Put 6 as the next digit of the answer. 
Result so far: 86493.06
If we take 5634 away from 6100, we end up with 466.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4660, and continue the process.

Advancing to step 11:
939 goes into 4660 4 times with a remainder of 904.
The next digit of our result is 4. 
Result so far: 86493.064
The remainder is 904 after subtracting 3756 from 4660.
Since there are no more digits in the dividend, we add a zero to the remainder making it 9040, and continue the process.

On to step 12:
When dividing 9040 by 939, we get 9 with a remainder of 589.
The next digit of our result is 9. 
Result so far: 86493.0649
The remainder is 589 after subtracting 8451 from 9040.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5890, and continue the process.

Step 13:
5890 divided by 939 is 6 with a remainder of 256.
The next digit of our result is 6. 
Result so far: 86493.06496
If we subtract 5634 from 5890, we get 256.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2560, and continue the process.

Let's proceed to step 14:
939 can be fit into 2560 2 times, resulting in a remainder of 682.
Record the quotient 2 as the next digit in the result. 
Result so far: 86493.064962
Subtracting 1878 from 2560 leaves us with 682.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6820, and continue the process.

On to step 15:
If we divide 6820 by 939, we get 7 and a remainder of 247.
The next digit of our result is 7. 
Result so far: 86493.0649627
If we subtract 6573 from 6820, we get 247.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2470, and continue the process.

Step 16:
2470 divided by 939 is 2 with a remainder of 592.
Record the quotient 2 as the next digit in the result. 
Result so far: 86493.06496272
If we subtract 1878 from 2470, we get 592.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5920, and continue the process.

After the division, we end up with 86493.06496272 and a remainder of 5.92e-07.