We're dividing 86580094 by 988 
We're looking to find how many times 988 goes into 86580094.

Step 1:
988 goes into 8 0 times with a remainder of 8.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 8 after subtracting 0 from 8.
Take the next digit (6) from the dividend and append it to 8, then repeat: 86 / 988

Advancing to step 2:
988 goes into 86 0 times with a remainder of 86.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 86, we end up with 86.
Take the next digit (5) from the dividend and append it to 86, then repeat: 865 / 988

Advancing to step 3:
The number 988 fits into 865 0 times, leaving a remainder of 865.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 865 and we're left with 865.
Include the next digit (8) from the dividend after 865, then repeat: 8658 / 988

Moving on to step 4:
If we divide 8658 by 988, we get 8 and a remainder of 754.
Use 8 as the next digit of our solution. 
Result so far: 8.0
If we take 7904 away from 8658, we end up with 754.
Grab the next digit (0) from the dividend, add it to 754, then carry on: 7540 / 988

Moving on to step 5:
988 goes into 7540 7 times with a remainder of 624.
Record the quotient 7 as the next digit in the result. 
Result so far: 87.0
If we subtract 6916 from 7540, we get 624.
Append the next digit (0) from the dividend to 624 and continue with: 6240 / 988

Moving on to step 6:
If we divide 6240 by 988, we get 6 and a remainder of 312.
Write down 6 as next digit of the result. 
Result so far: 876.0
If we subtract 5928 from 6240, we get 312.
Grab the next digit (9) from the dividend, add it to 312, then carry on: 3129 / 988

Step 7:
988 can be fit into 3129 3 times, resulting in a remainder of 165.
The next digit of our result is 3. 
Result so far: 8763.0
If we take 2964 away from 3129, we end up with 165.
Include the next digit (4) from the dividend after 165, then repeat: 1654 / 988

Let's proceed to step 8:
1654 divided by 988 is 1 with a remainder of 666.
Write down 1 as next digit of the result. 
Result so far: 87631.0
The remainder is 666 after subtracting 988 from 1654.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6660, and continue the process.

Advancing to step 9:
6660 divided by 988 is 6 with a remainder of 732.
The next digit of our result is 6. 
Result so far: 87631.6
If we take 5928 away from 6660, we end up with 732.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7320, and continue the process.

Step 10:
The number 988 fits into 7320 7 times, leaving a remainder of 404.
Write down 7 as next digit of the result. 
Result so far: 87631.67
If we subtract 6916 from 7320, we get 404.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4040, and continue the process.

Advancing to step 11:
988 can be fit into 4040 4 times, resulting in a remainder of 88.
The number 4 becomes the next digit in our result. 
Result so far: 87631.674
Subtract 3952 from 4040 to get 88.
Since there are no more digits in the dividend, we add a zero to the remainder making it 880, and continue the process.

On to step 12:
If we divide 880 by 988, we get 0 and a remainder of 880.
Use 0 as the next digit of our solution. 
Result so far: 87631.674
Deduct 0 from 880 and we're left with 880.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8800, and continue the process.

Going ahead to step 13:
8800 divided by 988 is 8 with a remainder of 896.
Write down 8 as next digit of the result. 
Result so far: 87631.67408
Deduct 7904 from 8800 and we're left with 896.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8960, and continue the process.

Step 14:
8960 divided by 988 is 9 with a remainder of 68.
The number 9 becomes the next digit in our result. 
Result so far: 87631.674089
Deduct 8892 from 8960 and we're left with 68.
Since there are no more digits in the dividend, we add a zero to the remainder making it 680, and continue the process.

Moving on to step 15:
If we divide 680 by 988, we get 0 and a remainder of 680.
Use 0 as the next digit of our solution. 
Result so far: 87631.674089
Subtracting 0 from 680 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.

On to step 16:
988 goes into 6800 6 times with a remainder of 872.
The next digit of our result is 6. 
Result so far: 87631.67408906
Subtract 5928 from 6800 to get 872.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8720, and continue the process.

In conclusion, the division gives 87631.67408906 with a balance of 8.72e-07.