We look at the division of 19907740 by 42 
We want to divide 19907740 by 42.

On to step 1:
42 can be fit into 1 0 times, resulting in a remainder of 1.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 1 to get 1.
Take the next digit (9) from the dividend and append it to 1, then repeat: 19 / 42

Step 2:
19 divided by 42 is 0 with a remainder of 19.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 19, we get 19.
Append the next digit (9) from the dividend to 19 and continue with: 199 / 42

Advancing to step 3:
If we divide 199 by 42, we get 4 and a remainder of 31.
Record the quotient 4 as the next digit in the result. 
Result so far: 4.0
Subtracting 168 from 199 leaves us with 31.
Include the next digit (0) from the dividend after 31, then repeat: 310 / 42

Step 4:
42 can be fit into 310 7 times, resulting in a remainder of 16.
The number 7 becomes the next digit in our result. 
Result so far: 47.0
If we take 294 away from 310, we end up with 16.
Include the next digit (7) from the dividend after 16, then repeat: 167 / 42

On to step 5:
The number 42 fits into 167 3 times, leaving a remainder of 41.
The next digit of our result is 3. 
Result so far: 473.0
Deduct 126 from 167 and we're left with 41.
Append the next digit (7) from the dividend to 41 and continue with: 417 / 42

On to step 6:
417 divided by 42 is 9 with a remainder of 39.
Put 9 as the next digit of the answer. 
Result so far: 4739.0
If we subtract 378 from 417, we get 39.
Bring next digit (4) of the dividend behind the 39 and repeat the process: 394 / 42

Let's proceed to step 7:
The number 42 fits into 394 9 times, leaving a remainder of 16.
The number 9 becomes the next digit in our result. 
Result so far: 47399.0
Subtracting 378 from 394 leaves us with 16.
Fetch the next digit (0) from the dividend, attach it to 16 and continue: 160 / 42

Going ahead to step 8:
42 goes into 160 3 times with a remainder of 34.
Write down 3 as next digit of the result. 
Result so far: 473993.0
If we subtract 126 from 160, we get 34.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

Moving on to step 9:
The number 42 fits into 340 8 times, leaving a remainder of 4.
Write down 8 as next digit of the result. 
Result so far: 473993.8
The remainder is 4 after subtracting 336 from 340.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Let's proceed to step 10:
When dividing 40 by 42, we get 0 with a remainder of 40.
The next digit of our result is 0. 
Result so far: 473993.8
The remainder is 40 after subtracting 0 from 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Moving on to step 11:
42 can be fit into 400 9 times, resulting in a remainder of 22.
Use 9 as the next digit of our solution. 
Result so far: 473993.809
If we take 378 away from 400, we end up with 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Moving on to step 12:
If we divide 220 by 42, we get 5 and a remainder of 10.
Use 5 as the next digit of our solution. 
Result so far: 473993.8095
If we subtract 210 from 220, we get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Let's proceed to step 13:
100 divided by 42 is 2 with a remainder of 16.
Write down 2 as next digit of the result. 
Result so far: 473993.80952
Subtracting 84 from 100 leaves us with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Step 14:
42 goes into 160 3 times with a remainder of 34.
Use 3 as the next digit of our solution. 
Result so far: 473993.809523
Deduct 126 from 160 and we're left with 34.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

Moving on to step 15:
42 goes into 340 8 times with a remainder of 4.
Use 8 as the next digit of our solution. 
Result so far: 473993.8095238
Subtract 336 from 340 to get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

On to step 16:
40 divided by 42 is 0 with a remainder of 40.
Write down 0 as next digit of the result. 
Result so far: 473993.8095238
If we subtract 0 from 40, we get 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

The quotient of the division is 473993.8095238, and the remainder is 4e-08.