We look at the division of 81375989 by 516 
We want to figure out the number of times 81375989 can be divided by 516.

Going ahead to step 1:
When dividing 8 by 516, we get 0 with a remainder of 8.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 8 to get 8.
Fetch the next digit (1) from the dividend, attach it to 8 and continue: 81 / 516

Step 2:
516 can be fit into 81 0 times, resulting in a remainder of 81.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 81 leaves us with 81.
Bring next digit (3) of the dividend behind the 81 and repeat the process: 813 / 516

Advancing to step 3:
516 can be fit into 813 1 times, resulting in a remainder of 297.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
If we take 516 away from 813, we end up with 297.
Include the next digit (7) from the dividend after 297, then repeat: 2977 / 516

On to step 4:
516 can be fit into 2977 5 times, resulting in a remainder of 397.
Record the quotient 5 as the next digit in the result. 
Result so far: 15.0
If we subtract 2580 from 2977, we get 397.
Bring next digit (5) of the dividend behind the 397 and repeat the process: 3975 / 516

Moving on to step 5:
516 can be fit into 3975 7 times, resulting in a remainder of 363.
Put 7 as the next digit of the answer. 
Result so far: 157.0
The remainder is 363 after subtracting 3612 from 3975.
Fetch the next digit (9) from the dividend, attach it to 363 and continue: 3639 / 516

Going ahead to step 6:
3639 divided by 516 is 7 with a remainder of 27.
Write down 7 as next digit of the result. 
Result so far: 1577.0
If we subtract 3612 from 3639, we get 27.
Include the next digit (8) from the dividend after 27, then repeat: 278 / 516

On to step 7:
The number 516 fits into 278 0 times, leaving a remainder of 278.
Record the quotient 0 as the next digit in the result. 
Result so far: 15770.0
Subtracting 0 from 278 leaves us with 278.
Grab the next digit (9) from the dividend, add it to 278, then carry on: 2789 / 516

Step 8:
If we divide 2789 by 516, we get 5 and a remainder of 209.
Use 5 as the next digit of our solution. 
Result so far: 157705.0
Subtracting 2580 from 2789 leaves us with 209.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2090, and continue the process.

On to step 9:
2090 divided by 516 is 4 with a remainder of 26.
The next digit of our result is 4. 
Result so far: 157705.4
The remainder is 26 after subtracting 2064 from 2090.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

Advancing to step 10:
If we divide 260 by 516, we get 0 and a remainder of 260.
The next digit of our result is 0. 
Result so far: 157705.4
Deduct 0 from 260 and we're left with 260.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2600, and continue the process.

On to step 11:
If we divide 2600 by 516, we get 5 and a remainder of 20.
Use 5 as the next digit of our solution. 
Result so far: 157705.405
The remainder is 20 after subtracting 2580 from 2600.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

On to step 12:
When dividing 200 by 516, we get 0 with a remainder of 200.
Put 0 as the next digit of the answer. 
Result so far: 157705.405
Subtracting 0 from 200 leaves us with 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2000, and continue the process.

Step 13:
The number 516 fits into 2000 3 times, leaving a remainder of 452.
Record the quotient 3 as the next digit in the result. 
Result so far: 157705.40503
If we subtract 1548 from 2000, we get 452.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4520, and continue the process.

Step 14:
When dividing 4520 by 516, we get 8 with a remainder of 392.
Put 8 as the next digit of the answer. 
Result so far: 157705.405038
If we subtract 4128 from 4520, we get 392.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3920, and continue the process.

Step 15:
516 goes into 3920 7 times with a remainder of 308.
The number 7 becomes the next digit in our result. 
Result so far: 157705.4050387
The remainder is 308 after subtracting 3612 from 3920.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3080, and continue the process.

Advancing to step 16:
The number 516 fits into 3080 5 times, leaving a remainder of 500.
Record the quotient 5 as the next digit in the result. 
Result so far: 157705.40503875
If we subtract 2580 from 3080, we get 500.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5000, and continue the process.

The final outcome is 157705.40503875, with a leftover of 5e-07.