We look at the division of 115102 by 87 
We want to figure out the number of times 115102 can be divided by 87.

Moving on to step 1:
If we divide 1 by 87, we get 0 and a remainder of 1.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 1 after subtracting 0 from 1.
Fetch the next digit (1) from the dividend, attach it to 1 and continue: 11 / 87

Step 2:
The number 87 fits into 11 0 times, leaving a remainder of 11.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 11 after subtracting 0 from 11.
Grab the next digit (5) from the dividend, add it to 11, then carry on: 115 / 87

Let's proceed to step 3:
87 goes into 115 1 times with a remainder of 28.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Subtracting 87 from 115 leaves us with 28.
Bring next digit (1) of the dividend behind the 28 and repeat the process: 281 / 87

Advancing to step 4:
281 divided by 87 is 3 with a remainder of 20.
Record the quotient 3 as the next digit in the result. 
Result so far: 13.0
If we take 261 away from 281, we end up with 20.
Append the next digit (0) from the dividend to 20 and continue with: 200 / 87

Advancing to step 5:
200 divided by 87 is 2 with a remainder of 26.
The next digit of our result is 2. 
Result so far: 132.0
If we subtract 174 from 200, we get 26.
Take the next digit (2) from the dividend and append it to 26, then repeat: 262 / 87

Moving on to step 6:
262 divided by 87 is 3 with a remainder of 1.
Use 3 as the next digit of our solution. 
Result so far: 1323.0
Subtracting 261 from 262 leaves us 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.

Going ahead to step 7:
When dividing 10 by 87, we get 0 with a remainder of 10.
The number 0 becomes the next digit in our result. 
Result so far: 1323.0
If we subtract 0 from 10, we get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

On to step 8:
87 goes into 100 1 times with a remainder of 13.
Write down 1 as next digit of the result. 
Result so far: 1323.01
Subtracting 87 from 100 leaves us with 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Step 9:
87 goes into 130 1 times with a remainder of 43.
The next digit of our result is 1. 
Result so far: 1323.011
If we take 87 away from 130, we end up with 43.
Since there are no more digits in the dividend, we add a zero to the remainder making it 430, and continue the process.

The final outcome is 1323.011, with a leftover of 0.0043.