193431 divided by 87 
Our goal is to divide 193431 by 87.

On to step 1:
When dividing 1 by 87, we get 0 with a remainder of 1.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 1 after subtracting 0 from 1.
Include the next digit (9) from the dividend after 1, then repeat: 19 / 87

Let's proceed to step 2:
If we divide 19 by 87, we get 0 and a remainder of 19.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 19, we get 19.
Append the next digit (3) from the dividend to 19 and continue with: 193 / 87

Advancing to step 3:
The number 87 fits into 193 2 times, leaving a remainder of 19.
Use 2 as the next digit of our solution. 
Result so far: 2.0
If we subtract 174 from 193, we get 19.
Append the next digit (4) from the dividend to 19 and continue with: 194 / 87

Moving on to step 4:
When dividing 194 by 87, we get 2 with a remainder of 20.
The number 2 becomes the next digit in our result. 
Result so far: 22.0
The remainder is 20 after subtracting 174 from 194.
Append the next digit (3) from the dividend to 20 and continue with: 203 / 87

Advancing to step 5:
203 divided by 87 is 2 with a remainder of 29.
Write down 2 as next digit of the result. 
Result so far: 222.0
The remainder is 29 after subtracting 174 from 203.
Bring next digit (1) of the dividend behind the 29 and repeat the process: 291 / 87

On to step 6:
87 goes into 291 3 times with a remainder of 30.
The next digit of our result is 3. 
Result so far: 2223.0
Subtracting 261 from 291 leaves us with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Advancing to step 7:
The number 87 fits into 300 3 times, leaving a remainder of 39.
The number 3 becomes the next digit in our result. 
Result so far: 2223.3
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.

Moving on to step 8:
The number 87 fits into 390 4 times, leaving a remainder of 42.
The number 4 becomes the next digit in our result. 
Result so far: 2223.34
Subtract 348 from 390 to 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 9:
When dividing 420 by 87, we get 4 with a remainder of 72.
Write down 4 as next digit of the result. 
Result so far: 2223.344
Deduct 348 from 420 and we're left with 72.
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 2223.344 with a remainder of 0.0072.