We divide 89700971 by 660
We want to figure out the number of times 89700971 can be divided by 660.

Going ahead to step 1:
8 divided by 660 is 0 with a remainder of 8.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 8, we get 8.
Include the next digit (9) from the dividend after 8, then repeat: 89 / 660

Going ahead to step 2:
The number 660 fits into 89 0 times, leaving a remainder of 89.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 89, we end up with 89.
Append the next digit (7) from the dividend to 89 and continue with: 897 / 660

Advancing to step 3:
660 goes into 897 1 times with a remainder of 237.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Subtract 660 from 897 to get 237.
Include the next digit (0) from the dividend after 237, then repeat: 2370 / 660

Step 4:
If we divide 2370 by 660, we get 3 and a remainder of 390.
Record the quotient 3 as the next digit in the result. 
Result so far: 13.0
If we subtract 1980 from 2370, we get 390.
Grab the next digit (0) from the dividend, add it to 390, then carry on: 3900 / 660

Going ahead to step 5:
660 can be fit into 3900 5 times, resulting in a remainder of 600.
The next digit of our result is 5. 
Result so far: 135.0
Deduct 3300 from 3900 and we're left with 600.
Append the next digit (9) from the dividend to 600 and continue with: 6009 / 660

Step 6:
660 goes into 6009 9 times with a remainder of 69.
Record the quotient 9 as the next digit in the result. 
Result so far: 1359.0
Subtracting 5940 from 6009 leaves us with 69.
Bring next digit (7) of the dividend behind the 69 and repeat the process: 697 / 660

Moving on to step 7:
If we divide 697 by 660, we get 1 and a remainder of 37.
The next digit of our result is 1. 
Result so far: 13591.0
If we subtract 660 from 697, we get 37.
Include the next digit (1) from the dividend after 37, then repeat: 371 / 660

On to step 8:
If we divide 371 by 660, we get 0 and a remainder of 371.
Record the quotient 0 as the next digit in the result. 
Result so far: 135910.0
If we take 0 away from 371, we end up with 371.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3710, and continue the process.

Moving on to step 9:
660 goes into 3710 5 times with a remainder of 410.
Record the quotient 5 as the next digit in the result. 
Result so far: 135910.5
The remainder is 410 after subtracting 3300 from 3710.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4100, and continue the process.

Advancing to step 10:
4100 divided by 660 is 6 with a remainder of 140.
Put 6 as the next digit of the answer. 
Result so far: 135910.56
The remainder is 140 after subtracting 3960 from 4100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1400, and continue the process.

On to step 11:
When dividing 1400 by 660, we get 2 with a remainder of 80.
Put 2 as the next digit of the answer. 
Result so far: 135910.562
If we take 1320 away from 1400, we end up with 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

On to step 12:
When dividing 800 by 660, we get 1 with a remainder of 140.
The next digit of our result is 1. 
Result so far: 135910.5621
Subtract 660 from 800 to get 140.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1400, and continue the process.

On to step 13:
660 goes into 1400 2 times with a remainder of 80.
The number 2 becomes the next digit in our result. 
Result so far: 135910.56212
If we subtract 1320 from 1400, we 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.

Let's proceed to step 14:
660 can be fit into 800 1 times, resulting in a remainder of 140.
The number 1 becomes the next digit in our result. 
Result so far: 135910.562121
If we take 660 away from 800, we end up with 140.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1400, and continue the process.

On to step 15:
1400 divided by 660 is 2 with a remainder of 80.
The number 2 becomes the next digit in our result. 
Result so far: 135910.5621212
Deduct 1320 from 1400 and we're left with 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Step 16:
If we divide 800 by 660, we get 1 and a remainder of 140.
The number 1 becomes the next digit in our result. 
Result so far: 135910.56212121
Subtracting 660 from 800 leaves us with 140.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1400, and continue the process.

Our division results in 135910.56212121 with a remaining 1.4e-07.