81398984 divided by 936 
Let's see how many times 936 fits into 81398984.

Going ahead to step 1:
936 can be fit into 8 0 times, resulting in a remainder of 8.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 8 and we're left with 8.
Append the next digit (1) from the dividend to 8 and continue with: 81 / 936

Going ahead to step 2:
81 divided by 936 is 0 with a remainder of 81.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 81, we end up with 81.
Fetch the next digit (3) from the dividend, attach it to 81 and continue: 813 / 936

Moving on to step 3:
813 divided by 936 is 0 with a remainder of 813.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 813, we get 813.
Take the next digit (9) from the dividend and append it to 813, then repeat: 8139 / 936

Advancing to step 4:
8139 divided by 936 is 8 with a remainder of 651.
The next digit of our result is 8. 
Result so far: 8.0
Subtracting 7488 from 8139 leaves us with 651.
Append the next digit (8) from the dividend to 651 and continue with: 6518 / 936

Let's proceed to step 5:
When dividing 6518 by 936, we get 6 with a remainder of 902.
The number 6 becomes the next digit in our result. 
Result so far: 86.0
The remainder is 902 after subtracting 5616 from 6518.
Fetch the next digit (9) from the dividend, attach it to 902 and continue: 9029 / 936

Advancing to step 6:
936 can be fit into 9029 9 times, resulting in a remainder of 605.
Use 9 as the next digit of our solution. 
Result so far: 869.0
Subtract 8424 from 9029 to get 605.
Grab the next digit (8) from the dividend, add it to 605, then carry on: 6058 / 936

Moving on to step 7:
936 can be fit into 6058 6 times, resulting in a remainder of 442.
Put 6 as the next digit of the answer. 
Result so far: 8696.0
Deduct 5616 from 6058 and we're left with 442.
Include the next digit (4) from the dividend after 442, then repeat: 4424 / 936

Step 8:
If we divide 4424 by 936, we get 4 and a remainder of 680.
The number 4 becomes the next digit in our result. 
Result so far: 86964.0
Subtracting 3744 from 4424 leaves us with 680.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6800, and continue the process.

Step 9:
936 goes into 6800 7 times with a remainder of 248.
Use 7 as the next digit of our solution. 
Result so far: 86964.7
If we take 6552 away from 6800, we end up with 248.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2480, and continue the process.

Moving on to step 10:
When dividing 2480 by 936, we get 2 with a remainder of 608.
The next digit of our result is 2. 
Result so far: 86964.72
Deduct 1872 from 2480 and we're left with 608.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6080, and continue the process.

Going ahead to step 11:
When dividing 6080 by 936, we get 6 with a remainder of 464.
The next digit of our result is 6. 
Result so far: 86964.726
Subtracting 5616 from 6080 leaves us with 464.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4640, and continue the process.

Let's proceed to step 12:
When dividing 4640 by 936, we get 4 with a remainder of 896.
Put 4 as the next digit of the answer. 
Result so far: 86964.7264
The remainder is 896 after subtracting 3744 from 4640.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8960, and continue the process.

Moving on to step 13:
8960 divided by 936 is 9 with a remainder of 536.
Record the quotient 9 as the next digit in the result. 
Result so far: 86964.72649
If we subtract 8424 from 8960, we get 536.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5360, and continue the process.

On to step 14:
When dividing 5360 by 936, we get 5 with a remainder of 680.
Record the quotient 5 as the next digit in the result. 
Result so far: 86964.726495
Subtracting 4680 from 5360 leaves us with 680.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6800, and continue the process.

Step 15:
936 can be fit into 6800 7 times, resulting in a remainder of 248.
Record the quotient 7 as the next digit in the result. 
Result so far: 86964.7264957
Subtract 6552 from 6800 to get 248.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2480, and continue the process.

On to step 16:
936 goes into 2480 2 times with a remainder of 608.
Put 2 as the next digit of the answer. 
Result so far: 86964.72649572
Deduct 1872 from 2480 and we're left with 608.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6080, and continue the process.

The final result is 86964.72649572 with a remainder of 6.08e-07.