99173169 divided by 870 
Our goal is to divide 99173169 by 870.

Advancing to step 1:
The number 870 fits into 9 0 times, leaving a remainder of 9.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 9 to get 9.
Take the next digit (9) from the dividend and append it to 9, then repeat: 99 / 870

Moving on to step 2:
870 can be fit into 99 0 times, resulting in a remainder of 99.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 99, we end up with 99.
Grab the next digit (1) from the dividend, add it to 99, then carry on: 991 / 870

Step 3:
870 goes into 991 1 times with a remainder of 121.
Write down 1 as next digit of the result. 
Result so far: 1.0
Subtracting 870 from 991 leaves us with 121.
Fetch the next digit (7) from the dividend, attach it to 121 and continue: 1217 / 870

On to step 4:
The number 870 fits into 1217 1 times, leaving a remainder of 347.
Put 1 as the next digit of the answer. 
Result so far: 11.0
Subtract 870 from 1217 to get 347.
Bring next digit (3) of the dividend behind the 347 and repeat the process: 3473 / 870

Advancing to step 5:
870 can be fit into 3473 3 times, resulting in a remainder of 863.
The next digit of our result is 3. 
Result so far: 113.0
Deduct 2610 from 3473 and we're left with 863.
Append the next digit (1) from the dividend to 863 and continue with: 8631 / 870

Advancing to step 6:
870 goes into 8631 9 times with a remainder of 801.
The number 9 becomes the next digit in our result. 
Result so far: 1139.0
If we subtract 7830 from 8631, we get 801.
Bring next digit (6) of the dividend behind the 801 and repeat the process: 8016 / 870

Going ahead to step 7:
870 goes into 8016 9 times with a remainder of 186.
Use 9 as the next digit of our solution. 
Result so far: 11399.0
If we take 7830 away from 8016, we end up with 186.
Bring next digit (9) of the dividend behind the 186 and repeat the process: 1869 / 870

Step 8:
When dividing 1869 by 870, we get 2 with a remainder of 129.
Record the quotient 2 as the next digit in the result. 
Result so far: 113992.0
Subtracting 1740 from 1869 leaves us with 129.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1290, and continue the process.

Going ahead to step 9:
If we divide 1290 by 870, we get 1 and a remainder of 420.
Write down 1 as next digit of the result. 
Result so far: 113992.1
If we take 870 away from 1290, we end up with 420.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4200, and continue the process.

Going ahead to step 10:
870 can be fit into 4200 4 times, resulting in a remainder of 720.
The number 4 becomes the next digit in our result. 
Result so far: 113992.14
If we subtract 3480 from 4200, we get 720.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7200, and continue the process.

Going ahead to step 11:
7200 divided by 870 is 8 with a remainder of 240.
Record the quotient 8 as the next digit in the result. 
Result so far: 113992.148
Subtract 6960 from 7200 to get 240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2400, and continue the process.

On to step 12:
870 can be fit into 2400 2 times, resulting in a remainder of 660.
Put 2 as the next digit of the answer. 
Result so far: 113992.1482
Subtracting 1740 from 2400 leaves us with 660.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6600, and continue the process.

Going ahead to step 13:
870 goes into 6600 7 times with a remainder of 510.
Record the quotient 7 as the next digit in the result. 
Result so far: 113992.14827
The remainder is 510 after subtracting 6090 from 6600.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5100, and continue the process.

Moving on to step 14:
If we divide 5100 by 870, we get 5 and a remainder of 750.
The number 5 becomes the next digit in our result. 
Result so far: 113992.148275
If we subtract 4350 from 5100, we get 750.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7500, and continue the process.

On to step 15:
7500 divided by 870 is 8 with a remainder of 540.
Write down 8 as next digit of the result. 
Result so far: 113992.1482758
Deduct 6960 from 7500 and we're left with 540.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5400, and continue the process.

Advancing to step 16:
870 goes into 5400 6 times with a remainder of 180.
Use 6 as the next digit of our solution. 
Result so far: 113992.14827586
The remainder is 180 after subtracting 5220 from 5400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1800, and continue the process.

In conclusion, the division gives 113992.14827586 with a balance of 1.8e-07.