We look at the division of 99539870 by 187 
We want to divide 99539870 by 187.

Let's proceed to step 1:
When dividing 9 by 187, we get 0 with a remainder of 9.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 9 and we're left with 9.
Fetch the next digit (9) from the dividend, attach it to 9 and continue: 99 / 187

On to step 2:
If we divide 99 by 187, we get 0 and a remainder of 99.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 99, we end up with 99.
Grab the next digit (5) from the dividend, add it to 99, then carry on: 995 / 187

Advancing to step 3:
187 can be fit into 995 5 times, resulting in a remainder of 60.
Use 5 as the next digit of our solution. 
Result so far: 5.0
Subtracting 935 from 995 leaves us with 60.
Append the next digit (3) from the dividend to 60 and continue with: 603 / 187

Moving on to step 4:
If we divide 603 by 187, we get 3 and a remainder of 42.
Put 3 as the next digit of the answer. 
Result so far: 53.0
The remainder is 42 after subtracting 561 from 603.
Fetch the next digit (9) from the dividend, attach it to 42 and continue: 429 / 187

On to step 5:
The number 187 fits into 429 2 times, leaving a remainder of 55.
Write down 2 as next digit of the result. 
Result so far: 532.0
If we take 374 away from 429, we end up with 55.
Take the next digit (8) from the dividend and append it to 55, then repeat: 558 / 187

Step 6:
The number 187 fits into 558 2 times, leaving a remainder of 184.
Use 2 as the next digit of our solution. 
Result so far: 5322.0
If we subtract 374 from 558, we get 184.
Take the next digit (7) from the dividend and append it to 184, then repeat: 1847 / 187

On to step 7:
187 can be fit into 1847 9 times, resulting in a remainder of 164.
The number 9 becomes the next digit in our result. 
Result so far: 53229.0
Subtracting 1683 from 1847 leaves us with 164.
Bring next digit (0) of the dividend behind the 164 and repeat the process: 1640 / 187

Going ahead to step 8:
187 can be fit into 1640 8 times, resulting in a remainder of 144.
Record the quotient 8 as the next digit in the result. 
Result so far: 532298.0
The remainder is 144 after subtracting 1496 from 1640.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1440, and continue the process.

Step 9:
When dividing 1440 by 187, we get 7 with a remainder of 131.
Put 7 as the next digit of the answer. 
Result so far: 532298.7
Deduct 1309 from 1440 and we're left with 131.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1310, and continue the process.

Advancing to step 10:
187 goes into 1310 7 times with a remainder of 1.
Write down 7 as next digit of the result. 
Result so far: 532298.77
If we take 1309 away from 1310, we end up with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

After the division, we end up with 532298.77 and a remainder of 0.001.