81657159 divided by 215 
We're looking to find how many times 215 goes into 81657159.

On to step 1:
When dividing 8 by 215, we get 0 with a remainder of 8.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 8, we get 8.
Take the next digit (1) from the dividend and append it to 8, then repeat: 81 / 215

Moving on to step 2:
215 goes into 81 0 times with a remainder of 81.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 81 and we're left with 81.
Fetch the next digit (6) from the dividend, attach it to 81 and continue: 816 / 215

On to step 3:
When dividing 816 by 215, we get 3 with a remainder of 171.
Use 3 as the next digit of our solution. 
Result so far: 3.0
If we take 645 away from 816, we end up with 171.
Grab the next digit (5) from the dividend, add it to 171, then carry on: 1715 / 215

Step 4:
1715 divided by 215 is 7 with a remainder of 210.
Record the quotient 7 as the next digit in the result. 
Result so far: 37.0
If we take 1505 away from 1715, we end up with 210.
Take the next digit (7) from the dividend and append it to 210, then repeat: 2107 / 215

Moving on to step 5:
When dividing 2107 by 215, we get 9 with a remainder of 172.
The next digit of our result is 9. 
Result so far: 379.0
Subtracting 1935 from 2107 leaves us with 172.
Fetch the next digit (1) from the dividend, attach it to 172 and continue: 1721 / 215

Let's proceed to step 6:
215 can be fit into 1721 8 times, resulting in a remainder of 1.
The number 8 becomes the next digit in our result. 
Result so far: 3798.0
Subtract 1720 from 1721 to get 1.
Take the next digit (5) from the dividend and append it to 1, then repeat: 15 / 215

Advancing to step 7:
215 goes into 15 0 times with a remainder of 15.
Write down 0 as next digit of the result. 
Result so far: 37980.0
If we take 0 away from 15, we end up with 15.
Grab the next digit (9) from the dividend, add it to 15, then carry on: 159 / 215

Advancing to step 8:
The number 215 fits into 159 0 times, leaving a remainder of 159.
The next digit of our result is 0. 
Result so far: 379800.0
Subtract 0 from 159 to get 159.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1590, and continue the process.

Going ahead to step 9:
1590 divided by 215 is 7 with a remainder of 85.
Write down 7 as next digit of the result. 
Result so far: 379800.7
If we subtract 1505 from 1590, we get 85.
Since there are no more digits in the dividend, we add a zero to the remainder making it 850, and continue the process.

Let's proceed to step 10:
If we divide 850 by 215, we get 3 and a remainder of 205.
Write down 3 as next digit of the result. 
Result so far: 379800.73
Deduct 645 from 850 and we're left with 205.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2050, and continue the process.

On to step 11:
215 can be fit into 2050 9 times, resulting in a remainder of 115.
The next digit of our result is 9. 
Result so far: 379800.739
The remainder is 115 after subtracting 1935 from 2050.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1150, and continue the process.

On to step 12:
215 can be fit into 1150 5 times, resulting in a remainder of 75.
Put 5 as the next digit of the answer. 
Result so far: 379800.7395
If we take 1075 away from 1150, we end up with 75.
Since there are no more digits in the dividend, we add a zero to the remainder making it 750, and continue the process.

Moving on to step 13:
215 goes into 750 3 times with a remainder of 105.
Write down 3 as next digit of the result. 
Result so far: 379800.73953
If we subtract 645 from 750, we get 105.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1050, and continue the process.

Moving on to step 14:
When dividing 1050 by 215, we get 4 with a remainder of 190.
Put 4 as the next digit of the answer. 
Result so far: 379800.739534
Subtract 860 from 1050 to get 190.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1900, and continue the process.

Step 15:
1900 divided by 215 is 8 with a remainder of 180.
The number 8 becomes the next digit in our result. 
Result so far: 379800.7395348
Subtract 1720 from 1900 to get 180.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1800, and continue the process.

Going ahead to step 16:
1800 divided by 215 is 8 with a remainder of 80.
Use 8 as the next digit of our solution. 
Result so far: 379800.73953488
Subtract 1720 from 1800 to get 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

The final result is 379800.73953488 with a remainder of 8e-08.