We're dividing 78085500 by 987 
We want to figure out the number of times 78085500 can be divided by 987.

On to step 1:
987 can be fit into 7 0 times, resulting in a remainder of 7.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 7 after subtracting 0 from 7.
Take the next digit (8) from the dividend and append it to 7, then repeat: 78 / 987

Step 2:
987 goes into 78 0 times with a remainder of 78.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 78, we end up with 78.
Grab the next digit (0) from the dividend, add it to 78, then carry on: 780 / 987

Moving on to step 3:
987 goes into 780 0 times with a remainder of 780.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 780, we get 780.
Take the next digit (8) from the dividend and append it to 780, then repeat: 7808 / 987

Step 4:
987 can be fit into 7808 7 times, resulting in a remainder of 899.
Write down 7 as next digit of the result. 
Result so far: 7.0
If we take 6909 away from 7808, we end up with 899.
Include the next digit (5) from the dividend after 899, then repeat: 8995 / 987

Going ahead to step 5:
If we divide 8995 by 987, we get 9 and a remainder of 112.
The number 9 becomes the next digit in our result. 
Result so far: 79.0
Subtract 8883 from 8995 to get 112.
Include the next digit (5) from the dividend after 112, then repeat: 1125 / 987

Step 6:
987 can be fit into 1125 1 times, resulting in a remainder of 138.
Record the quotient 1 as the next digit in the result. 
Result so far: 791.0
Subtract 987 from 1125 to get 138.
Bring next digit (0) of the dividend behind the 138 and repeat the process: 1380 / 987

Step 7:
987 can be fit into 1380 1 times, resulting in a remainder of 393.
Use 1 as the next digit of our solution. 
Result so far: 7911.0
Deduct 987 from 1380 and we're left with 393.
Append the next digit (0) from the dividend to 393 and continue with: 3930 / 987

Advancing to step 8:
If we divide 3930 by 987, we get 3 and a remainder of 969.
Use 3 as the next digit of our solution. 
Result so far: 79113.0
If we take 2961 away from 3930, we end up with 969.
Since there are no more digits in the dividend, we add a zero to the remainder making it 9690, and continue the process.

On to step 9:
If we divide 9690 by 987, we get 9 and a remainder of 807.
The next digit of our result is 9. 
Result so far: 79113.9
Deduct 8883 from 9690 and we're left with 807.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8070, and continue the process.

Advancing to step 10:
8070 divided by 987 is 8 with a remainder of 174.
Use 8 as the next digit of our solution. 
Result so far: 79113.98
Deduct 7896 from 8070 and we're left with 174.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1740, and continue the process.

On to step 11:
987 goes into 1740 1 times with a remainder of 753.
Put 1 as the next digit of the answer. 
Result so far: 79113.981
If we take 987 away from 1740, we end up with 753.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7530, and continue the process.

Let's proceed to step 12:
When dividing 7530 by 987, we get 7 with a remainder of 621.
The number 7 becomes the next digit in our result. 
Result so far: 79113.9817
The remainder is 621 after subtracting 6909 from 7530.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6210, and continue the process.

On to step 13:
When dividing 6210 by 987, we get 6 with a remainder of 288.
Use 6 as the next digit of our solution. 
Result so far: 79113.98176
Deduct 5922 from 6210 and we're left with 288.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2880, and continue the process.

Advancing to step 14:
If we divide 2880 by 987, we get 2 and a remainder of 906.
Put 2 as the next digit of the answer. 
Result so far: 79113.981762
Deduct 1974 from 2880 and we're left with 906.
Since there are no more digits in the dividend, we add a zero to the remainder making it 9060, and continue the process.

Let's proceed to step 15:
987 can be fit into 9060 9 times, resulting in a remainder of 177.
Put 9 as the next digit of the answer. 
Result so far: 79113.9817629
Deduct 8883 from 9060 and we're left with 177.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1770, and continue the process.

On to step 16:
987 goes into 1770 1 times with a remainder of 783.
The number 1 becomes the next digit in our result. 
Result so far: 79113.98176291
Subtracting 987 from 1770 leaves us with 783.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7830, and continue the process.

After the division, we end up with 79113.98176291 and a remainder of 7.83e-07.