We're dividing 638207 by 42 
We want to divide 638207 by 42.

On to step 1:
When dividing 6 by 42, we get 0 with a remainder of 6.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 6 leaves us with 6.
Fetch the next digit (3) from the dividend, attach it to 6 and continue: 63 / 42

Moving on to step 2:
42 goes into 63 1 times with a remainder of 21.
Write down 1 as next digit of the result. 
Result so far: 1.0
Deduct 42 from 63 and we're left with 21.
Take the next digit (8) from the dividend and append it to 21, then repeat: 218 / 42

Advancing to step 3:
If we divide 218 by 42, we get 5 and a remainder of 8.
Record the quotient 5 as the next digit in the result. 
Result so far: 15.0
If we take 210 away from 218, we end up with 8.
Append the next digit (2) from the dividend to 8 and continue with: 82 / 42

Advancing to step 4:
The number 42 fits into 82 1 times, leaving a remainder of 40.
The next digit of our result is 1. 
Result so far: 151.0
If we subtract 42 from 82, we get 40.
Include the next digit (0) from the dividend after 40, then repeat: 400 / 42

On to step 5:
42 can be fit into 400 9 times, resulting in a remainder of 22.
Record the quotient 9 as the next digit in the result. 
Result so far: 1519.0
The remainder is 22 after subtracting 378 from 400.
Append the next digit (7) from the dividend to 22 and continue with: 227 / 42

Going ahead to step 6:
If we divide 227 by 42, we get 5 and a remainder of 17.
Use 5 as the next digit of our solution. 
Result so far: 15195.0
Deduct 210 from 227 and we're left with 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Moving on to step 7:
170 divided by 42 is 4 with a remainder of 2.
The number 4 becomes the next digit in our result. 
Result so far: 15195.4
If we take 168 away from 170, we end up 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.

Moving on to step 8:
The number 42 fits into 20 0 times, leaving a remainder of 20.
The next digit of our result is 0. 
Result so far: 15195.4
Subtracting 0 from 20 leaves us 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.

On to step 9:
When dividing 200 by 42, we get 4 with a remainder of 32.
Write down 4 as next digit of the result. 
Result so far: 15195.404
If we subtract 168 from 200, we get 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 10:
320 divided by 42 is 7 with a remainder of 26.
Write down 7 as next digit of the result. 
Result so far: 15195.4047
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.

On to step 11:
The number 42 fits into 260 6 times, leaving a remainder of 8.
Write down 6 as next digit of the result. 
Result so far: 15195.40476
Subtracting 252 from 260 leaves us with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Step 12:
The number 42 fits into 80 1 times, leaving a remainder of 38.
The next digit of our result is 1. 
Result so far: 15195.404761
Subtracting 42 from 80 leaves us with 38.
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 13:
The number 42 fits into 380 9 times, leaving a remainder of 2.
Put 9 as the next digit of the answer. 
Result so far: 15195.4047619
The remainder is 2 after subtracting 378 from 380.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

On to step 14:
The number 42 fits into 20 0 times, leaving a remainder of 20.
Use 0 as the next digit of our solution. 
Result so far: 15195.4047619
The remainder is 20 after subtracting 0 from 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

In conclusion, the division gives 15195.4047619 with a balance of 2e-08.