Let's divide 315188 by 42
We want to figure out the number of times 315188 can be divided by 42.

Going ahead to step 1:
If we divide 3 by 42, we get 0 and a remainder of 3.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 3 leaves us with 3.
Fetch the next digit (1) from the dividend, attach it to 3 and continue: 31 / 42

Advancing to step 2:
42 goes into 31 0 times with a remainder of 31.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 31, we end up with 31.
Fetch the next digit (5) from the dividend, attach it to 31 and continue: 315 / 42

Let's proceed to step 3:
When dividing 315 by 42, we get 7 with a remainder of 21.
Write down 7 as next digit of the result. 
Result so far: 7.0
If we take 294 away from 315, we end up with 21.
Bring next digit (1) of the dividend behind the 21 and repeat the process: 211 / 42

On to step 4:
When dividing 211 by 42, we get 5 with a remainder of 1.
Use 5 as the next digit of our solution. 
Result so far: 75.0
The remainder is 1 after subtracting 210 from 211.
Append the next digit (8) from the dividend to 1 and continue with: 18 / 42

Going ahead to step 5:
42 can be fit into 18 0 times, resulting in a remainder of 18.
The next digit of our result is 0. 
Result so far: 750.0
Deduct 0 from 18 and we're left with 18.
Bring next digit (8) of the dividend behind the 18 and repeat the process: 188 / 42

Advancing to step 6:
When dividing 188 by 42, we get 4 with a remainder of 20.
Use 4 as the next digit of our solution. 
Result so far: 7504.0
If we take 168 away from 188, we end up with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Let's proceed to step 7:
200 divided by 42 is 4 with a remainder of 32.
The next digit of our result is 4. 
Result so far: 7504.4
The remainder is 32 after subtracting 168 from 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Let's proceed to step 8:
The number 42 fits into 320 7 times, leaving a remainder of 26.
Put 7 as the next digit of the answer. 
Result so far: 7504.47
If we subtract 294 from 320, we get 26.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

Moving on to step 9:
If we divide 260 by 42, we get 6 and a remainder of 8.
Write down 6 as next digit of the result. 
Result so far: 7504.476
If we subtract 252 from 260, we get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Going ahead to step 10:
If we divide 80 by 42, we get 1 and a remainder of 38.
Record the quotient 1 as the next digit in the result. 
Result so far: 7504.4761
The remainder is 38 after subtracting 42 from 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Let's proceed to step 11:
42 goes into 380 9 times with a remainder of 2.
The next digit of our result is 9. 
Result so far: 7504.47619
Subtracting 378 from 380 leaves us with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Advancing to step 12:
When dividing 20 by 42, we get 0 with a remainder of 20.
Record the quotient 0 as the next digit in the result. 
Result so far: 7504.47619
Subtract 0 from 20 to get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Going ahead to step 13:
The number 42 fits into 200 4 times, leaving a remainder of 32.
Use 4 as the next digit of our solution. 
Result so far: 7504.4761904
Subtracting 168 from 200 leaves us with 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Step 14:
42 goes into 320 7 times with a remainder of 26.
The next digit of our result is 7. 
Result so far: 7504.47619047
Subtract 294 from 320 to get 26.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

The final result is 7504.47619047 with a remainder of 2.6e-08.