87888116 ÷ 861 
We want to divide 87888116 by 861.

Advancing to step 1:
8 divided by 861 is 0 with a remainder of 8.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 8 after subtracting 0 from 8.
Take the next digit (7) from the dividend and append it to 8, then repeat: 87 / 861

Advancing to step 2:
87 divided by 861 is 0 with a remainder of 87.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 87 leaves us with 87.
Grab the next digit (8) from the dividend, add it to 87, then carry on: 878 / 861

On to step 3:
The number 861 fits into 878 1 times, leaving a remainder of 17.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Deduct 861 from 878 and we're left with 17.
Take the next digit (8) from the dividend and append it to 17, then repeat: 178 / 861

Step 4:
861 goes into 178 0 times with a remainder of 178.
Record the quotient 0 as the next digit in the result. 
Result so far: 10.0
Subtracting 0 from 178 leaves us with 178.
Bring next digit (8) of the dividend behind the 178 and repeat the process: 1788 / 861

Advancing to step 5:
When dividing 1788 by 861, we get 2 with a remainder of 66.
Write down 2 as next digit of the result. 
Result so far: 102.0
The remainder is 66 after subtracting 1722 from 1788.
Append the next digit (1) from the dividend to 66 and continue with: 661 / 861

Moving on to step 6:
If we divide 661 by 861, we get 0 and a remainder of 661.
The next digit of our result is 0. 
Result so far: 1020.0
If we take 0 away from 661, we end up with 661.
Fetch the next digit (1) from the dividend, attach it to 661 and continue: 6611 / 861

Advancing to step 7:
If we divide 6611 by 861, we get 7 and a remainder of 584.
Use 7 as the next digit of our solution. 
Result so far: 10207.0
If we take 6027 away from 6611, we end up with 584.
Take the next digit (6) from the dividend and append it to 584, then repeat: 5846 / 861

Step 8:
The number 861 fits into 5846 6 times, leaving a remainder of 680.
Record the quotient 6 as the next digit in the result. 
Result so far: 102076.0
Subtract 5166 from 5846 to get 680.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6800, and continue the process.

Moving on to step 9:
861 can be fit into 6800 7 times, resulting in a remainder of 773.
The number 7 becomes the next digit in our result. 
Result so far: 102076.7
If we subtract 6027 from 6800, we get 773.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7730, and continue the process.

Advancing to step 10:
861 goes into 7730 8 times with a remainder of 842.
Put 8 as the next digit of the answer. 
Result so far: 102076.78
The remainder is 842 after subtracting 6888 from 7730.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8420, and continue the process.

On to step 11:
861 can be fit into 8420 9 times, resulting in a remainder of 671.
Record the quotient 9 as the next digit in the result. 
Result so far: 102076.789
The remainder is 671 after subtracting 7749 from 8420.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6710, and continue the process.

On to step 12:
861 can be fit into 6710 7 times, resulting in a remainder of 683.
The next digit of our result is 7. 
Result so far: 102076.7897
Deduct 6027 from 6710 and we're left with 683.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6830, and continue the process.

Advancing to step 13:
861 can be fit into 6830 7 times, resulting in a remainder of 803.
Use 7 as the next digit of our solution. 
Result so far: 102076.78977
Subtracting 6027 from 6830 leaves us with 803.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8030, and continue the process.

The quotient of the division is 102076.78977, and the remainder is 0.000803.