198189 divided by 87 
We want to figure out the number of times 198189 can be divided by 87.

On to step 1:
87 goes into 1 0 times with a remainder of 1.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 1 and we're left with 1.
Grab the next digit (9) from the dividend, add it to 1, then carry on: 19 / 87

Going ahead to step 2:
87 can be fit into 19 0 times, resulting in a remainder of 19.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 19 leaves us with 19.
Grab the next digit (8) from the dividend, add it to 19, then carry on: 198 / 87

On to step 3:
198 divided by 87 is 2 with a remainder of 24.
Use 2 as the next digit of our solution. 
Result so far: 2.0
Subtracting 174 from 198 leaves us with 24.
Take the next digit (1) from the dividend and append it to 24, then repeat: 241 / 87

Advancing to step 4:
87 can be fit into 241 2 times, resulting in a remainder of 67.
The number 2 becomes the next digit in our result. 
Result so far: 22.0
If we subtract 174 from 241, we get 67.
Fetch the next digit (8) from the dividend, attach it to 67 and continue: 678 / 87

Step 5:
The number 87 fits into 678 7 times, leaving a remainder of 69.
Write down 7 as next digit of the result. 
Result so far: 227.0
Subtract 609 from 678 to get 69.
Bring next digit (9) of the dividend behind the 69 and repeat the process: 699 / 87

Going ahead to step 6:
699 divided by 87 is 8 with a remainder of 3.
The number 8 becomes the next digit in our result. 
Result so far: 2278.0
If we take 696 away from 699, we end up with 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

On to step 7:
The number 87 fits into 30 0 times, leaving a remainder of 30.
The next digit of our result is 0. 
Result so far: 2278.0
The remainder is 30 after subtracting 0 from 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Going ahead to step 8:
When dividing 300 by 87, we get 3 with a remainder of 39.
The number 3 becomes the next digit in our result. 
Result so far: 2278.03
Subtract 261 from 300 to get 39.
Since there are no more digits in the dividend, we add a zero to the remainder making it 390, and continue the process.

Step 9:
87 can be fit into 390 4 times, resulting in a remainder of 42.
Use 4 as the next digit of our solution. 
Result so far: 2278.034
If we subtract 348 from 390, we get 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Let's proceed to step 10:
The number 87 fits into 420 4 times, leaving a remainder of 72.
Put 4 as the next digit of the answer. 
Result so far: 2278.0344
The remainder is 72 after subtracting 348 from 420.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

The final result is 2278.0344 with a remainder of 0.00072.