Let's divide 80188910 by 915
We want to figure out the number of times 80188910 can be divided by 915.

Advancing to step 1:
915 goes into 8 0 times with a remainder of 8.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 8 leaves us with 8.
Include the next digit (0) from the dividend after 8, then repeat: 80 / 915

Going ahead to step 2:
If we divide 80 by 915, we get 0 and a remainder of 80.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 80 after subtracting 0 from 80.
Take the next digit (1) from the dividend and append it to 80, then repeat: 801 / 915

Going ahead to step 3:
The number 915 fits into 801 0 times, leaving a remainder of 801.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 801, we end up with 801.
Take the next digit (8) from the dividend and append it to 801, then repeat: 8018 / 915

Step 4:
8018 divided by 915 is 8 with a remainder of 698.
Use 8 as the next digit of our solution. 
Result so far: 8.0
If we subtract 7320 from 8018, we get 698.
Bring next digit (8) of the dividend behind the 698 and repeat the process: 6988 / 915

Going ahead to step 5:
If we divide 6988 by 915, we get 7 and a remainder of 583.
Use 7 as the next digit of our solution. 
Result so far: 87.0
If we subtract 6405 from 6988, we get 583.
Grab the next digit (9) from the dividend, add it to 583, then carry on: 5839 / 915

Moving on to step 6:
When dividing 5839 by 915, we get 6 with a remainder of 349.
Use 6 as the next digit of our solution. 
Result so far: 876.0
The remainder is 349 after subtracting 5490 from 5839.
Take the next digit (1) from the dividend and append it to 349, then repeat: 3491 / 915

Advancing to step 7:
The number 915 fits into 3491 3 times, leaving a remainder of 746.
The number 3 becomes the next digit in our result. 
Result so far: 8763.0
If we subtract 2745 from 3491, we get 746.
Grab the next digit (0) from the dividend, add it to 746, then carry on: 7460 / 915

Moving on to step 8:
The number 915 fits into 7460 8 times, leaving a remainder of 140.
Put 8 as the next digit of the answer. 
Result so far: 87638.0
Subtract 7320 from 7460 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 9:
The number 915 fits into 1400 1 times, leaving a remainder of 485.
The number 1 becomes the next digit in our result. 
Result so far: 87638.1
Deduct 915 from 1400 and we're left with 485.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4850, and continue the process.

On to step 10:
915 goes into 4850 5 times with a remainder of 275.
Write down 5 as next digit of the result. 
Result so far: 87638.15
If we take 4575 away from 4850, we end up with 275.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2750, and continue the process.

Advancing to step 11:
915 goes into 2750 3 times with a remainder of 5.
Write down 3 as next digit of the result. 
Result so far: 87638.153
Subtracting 2745 from 2750 leaves us with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Moving on to step 12:
The number 915 fits into 50 0 times, leaving a remainder of 50.
Put 0 as the next digit of the answer. 
Result so far: 87638.153
Deduct 0 from 50 and we're left with 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Let's proceed to step 13:
If we divide 500 by 915, we get 0 and a remainder of 500.
The next digit of our result is 0. 
Result so far: 87638.153
Subtracting 0 from 500 leaves us with 500.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5000, and continue the process.

After the division, we end up with 87638.153 and a remainder of 0.0005.