We divide 315393 by 87
We're looking to find how many times 87 goes into 315393.

Advancing to step 1:
When dividing 3 by 87, we get 0 with a remainder of 3.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 3 and we're left with 3.
Bring next digit (1) of the dividend behind the 3 and repeat the process: 31 / 87

Moving on to step 2:
87 goes into 31 0 times with a remainder of 31.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 31, we get 31.
Take the next digit (5) from the dividend and append it to 31, then repeat: 315 / 87

Advancing to step 3:
87 goes into 315 3 times with a remainder of 54.
The number 3 becomes the next digit in our result. 
Result so far: 3.0
Deduct 261 from 315 and we're left with 54.
Take the next digit (3) from the dividend and append it to 54, then repeat: 543 / 87

Moving on to step 4:
When dividing 543 by 87, we get 6 with a remainder of 21.
Use 6 as the next digit of our solution. 
Result so far: 36.0
If we subtract 522 from 543, we get 21.
Take the next digit (9) from the dividend and append it to 21, then repeat: 219 / 87

Going ahead to step 5:
If we divide 219 by 87, we get 2 and a remainder of 45.
Use 2 as the next digit of our solution. 
Result so far: 362.0
Subtracting 174 from 219 leaves us with 45.
Include the next digit (3) from the dividend after 45, then repeat: 453 / 87

Advancing to step 6:
87 can be fit into 453 5 times, resulting in a remainder of 18.
The number 5 becomes the next digit in our result. 
Result so far: 3625.0
Subtracting 435 from 453 leaves us with 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

On to step 7:
87 goes into 180 2 times with a remainder of 6.
Write down 2 as next digit of the result. 
Result so far: 3625.2
If we subtract 174 from 180, we get 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

On to step 8:
87 can be fit into 60 0 times, resulting in a remainder of 60.
Put 0 as the next digit of the answer. 
Result so far: 3625.2
The remainder is 60 after subtracting 0 from 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Advancing to step 9:
87 can be fit into 600 6 times, resulting in a remainder of 78.
The next digit of our result is 6. 
Result so far: 3625.206
If we take 522 away from 600, we end up with 78.
Since there are no more digits in the dividend, we add a zero to the remainder making it 780, and continue the process.

Step 10:
87 goes into 780 8 times with a remainder of 84.
The next digit of our result is 8. 
Result so far: 3625.2068
If we subtract 696 from 780, we get 84.
Since there are no more digits in the dividend, we add a zero to the remainder making it 840, and continue the process.

Let's proceed to step 11:
If we divide 840 by 87, we get 9 and a remainder of 57.
Put 9 as the next digit of the answer. 
Result so far: 3625.20689
The remainder is 57 after subtracting 783 from 840.
Since there are no more digits in the dividend, we add a zero to the remainder making it 570, and continue the process.

Advancing to step 12:
The number 87 fits into 570 6 times, leaving a remainder of 48.
The number 6 becomes the next digit in our result. 
Result so far: 3625.206896
If we take 522 away from 570, we end up with 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Step 13:
87 can be fit into 480 5 times, resulting in a remainder of 45.
The number 5 becomes the next digit in our result. 
Result so far: 3625.2068965
If we take 435 away from 480, we end up with 45.
Since there are no more digits in the dividend, we add a zero to the remainder making it 450, and continue the process.

On to step 14:
450 divided by 87 is 5 with a remainder of 15.
Write down 5 as next digit of the result. 
Result so far: 3625.20689655
Deduct 435 from 450 and we're left with 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

The final outcome is 3625.20689655, with a leftover of 1.5e-08.