We look at the division of 388907 by 42 
Let's see how many times 42 fits into 388907.

Advancing to step 1:
When dividing 3 by 42, we get 0 with a remainder of 3.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 3 and we're left with 3.
Bring next digit (8) of the dividend behind the 3 and repeat the process: 38 / 42

Step 2:
38 divided by 42 is 0 with a remainder of 38.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 38 leaves us with 38.
Append the next digit (8) from the dividend to 38 and continue with: 388 / 42

Moving on to step 3:
If we divide 388 by 42, we get 9 and a remainder of 10.
Put 9 as the next digit of the answer. 
Result so far: 9.0
The remainder is 10 after subtracting 378 from 388.
Grab the next digit (9) from the dividend, add it to 10, then carry on: 109 / 42

Let's proceed to step 4:
When dividing 109 by 42, we get 2 with a remainder of 25.
Use 2 as the next digit of our solution. 
Result so far: 92.0
Subtracting 84 from 109 leaves us with 25.
Take the next digit (0) from the dividend and append it to 25, then repeat: 250 / 42

Going ahead to step 5:
The number 42 fits into 250 5 times, leaving a remainder of 40.
Put 5 as the next digit of the answer. 
Result so far: 925.0
Subtract 210 from 250 to get 40.
Bring next digit (7) of the dividend behind the 40 and repeat the process: 407 / 42

Let's proceed to step 6:
42 can be fit into 407 9 times, resulting in a remainder of 29.
Record the quotient 9 as the next digit in the result. 
Result so far: 9259.0
Subtract 378 from 407 to get 29.
Since there are no more digits in the dividend, we add a zero to the remainder making it 290, and continue the process.

Step 7:
290 divided by 42 is 6 with a remainder of 38.
Put 6 as the next digit of the answer. 
Result so far: 9259.6
Subtracting 252 from 290 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.

Moving on to step 8:
42 can be fit into 380 9 times, resulting in a remainder of 2.
Use 9 as the next digit of our solution. 
Result so far: 9259.69
Deduct 378 from 380 and we're left 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.

On to step 9:
When dividing 20 by 42, we get 0 with a remainder of 20.
Use 0 as the next digit of our solution. 
Result so far: 9259.69
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.

Advancing to step 10:
200 divided by 42 is 4 with a remainder of 32.
The next digit of our result is 4. 
Result so far: 9259.6904
If we take 168 away from 200, we end up 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.

On to step 11:
If we divide 320 by 42, we get 7 and a remainder of 26.
Use 7 as the next digit of our solution. 
Result so far: 9259.69047
Subtracting 294 from 320 leaves us with 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 12:
260 divided by 42 is 6 with a remainder of 8.
Record the quotient 6 as the next digit in the result. 
Result so far: 9259.690476
If we take 252 away from 260, we end up 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.

Going ahead to step 13:
42 can be fit into 80 1 times, resulting in a remainder of 38.
The number 1 becomes the next digit in our result. 
Result so far: 9259.6904761
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.

Step 14:
42 goes into 380 9 times with a remainder of 2.
The next digit of our result is 9. 
Result so far: 9259.69047619
Deduct 378 from 380 and we're left 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.

The final outcome is 9259.69047619, with a leftover of 2e-09.