72661188 divided by 870 
Our goal is to divide 72661188 by 870.

On to step 1:
If we divide 7 by 870, we get 0 and a remainder of 7.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 7 to get 7.
Grab the next digit (2) from the dividend, add it to 7, then carry on: 72 / 870

Moving on to step 2:
If we divide 72 by 870, we get 0 and a remainder of 72.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 72, we end up with 72.
Include the next digit (6) from the dividend after 72, then repeat: 726 / 870

Advancing to step 3:
870 can be fit into 726 0 times, resulting in a remainder of 726.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 726, we end up with 726.
Include the next digit (6) from the dividend after 726, then repeat: 7266 / 870

Step 4:
870 goes into 7266 8 times with a remainder of 306.
The number 8 becomes the next digit in our result. 
Result so far: 8.0
The remainder is 306 after subtracting 6960 from 7266.
Grab the next digit (1) from the dividend, add it to 306, then carry on: 3061 / 870

Advancing to step 5:
If we divide 3061 by 870, we get 3 and a remainder of 451.
Use 3 as the next digit of our solution. 
Result so far: 83.0
If we subtract 2610 from 3061, we get 451.
Take the next digit (1) from the dividend and append it to 451, then repeat: 4511 / 870

Let's proceed to step 6:
The number 870 fits into 4511 5 times, leaving a remainder of 161.
Put 5 as the next digit of the answer. 
Result so far: 835.0
Deduct 4350 from 4511 and we're left with 161.
Include the next digit (8) from the dividend after 161, then repeat: 1618 / 870

Step 7:
When dividing 1618 by 870, we get 1 with a remainder of 748.
Put 1 as the next digit of the answer. 
Result so far: 8351.0
If we subtract 870 from 1618, we get 748.
Grab the next digit (8) from the dividend, add it to 748, then carry on: 7488 / 870

Going ahead to step 8:
7488 divided by 870 is 8 with a remainder of 528.
The number 8 becomes the next digit in our result. 
Result so far: 83518.0
Subtract 6960 from 7488 to get 528.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5280, and continue the process.

On to step 9:
5280 divided by 870 is 6 with a remainder of 60.
Record the quotient 6 as the next digit in the result. 
Result so far: 83518.6
Subtracting 5220 from 5280 leaves us with 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Step 10:
870 goes into 600 0 times with a remainder of 600.
The number 0 becomes the next digit in our result. 
Result so far: 83518.6
The remainder is 600 after subtracting 0 from 600.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6000, and continue the process.

On to step 11:
6000 divided by 870 is 6 with a remainder of 780.
Use 6 as the next digit of our solution. 
Result so far: 83518.606
Deduct 5220 from 6000 and we're left with 780.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7800, and continue the process.

Going ahead to step 12:
870 goes into 7800 8 times with a remainder of 840.
Use 8 as the next digit of our solution. 
Result so far: 83518.6068
The remainder is 840 after subtracting 6960 from 7800.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8400, and continue the process.

On to step 13:
If we divide 8400 by 870, we get 9 and a remainder of 570.
The next digit of our result is 9. 
Result so far: 83518.60689
If we subtract 7830 from 8400, we get 570.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5700, and continue the process.

Let's proceed to step 14:
870 goes into 5700 6 times with a remainder of 480.
The next digit of our result is 6. 
Result so far: 83518.606896
Subtract 5220 from 5700 to get 480.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4800, and continue the process.

Let's proceed to step 15:
870 goes into 4800 5 times with a remainder of 450.
Write down 5 as next digit of the result. 
Result so far: 83518.6068965
Subtract 4350 from 4800 to get 450.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4500, and continue the process.

Advancing to step 16:
870 goes into 4500 5 times with a remainder of 150.
The number 5 becomes the next digit in our result. 
Result so far: 83518.60689655
Subtracting 4350 from 4500 leaves us with 150.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1500, and continue the process.

After the division, we end up with 83518.60689655 and a remainder of 1.5e-07.