717398 ÷ 42 
Let's see how many times 42 fits into 717398.

On to step 1:
The number 42 fits into 7 0 times, leaving a remainder of 7.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 7, we get 7.
Include the next digit (1) from the dividend after 7, then repeat: 71 / 42

Step 2:
If we divide 71 by 42, we get 1 and a remainder of 29.
The next digit of our result is 1. 
Result so far: 1.0
Subtract 42 from 71 to get 29.
Grab the next digit (7) from the dividend, add it to 29, then carry on: 297 / 42

On to step 3:
42 goes into 297 7 times with a remainder of 3.
Write down 7 as next digit of the result. 
Result so far: 17.0
If we subtract 294 from 297, we get 3.
Include the next digit (3) from the dividend after 3, then repeat: 33 / 42

Advancing to step 4:
When dividing 33 by 42, we get 0 with a remainder of 33.
Record the quotient 0 as the next digit in the result. 
Result so far: 170.0
Subtracting 0 from 33 leaves us with 33.
Include the next digit (9) from the dividend after 33, then repeat: 339 / 42

Moving on to step 5:
339 divided by 42 is 8 with a remainder of 3.
Put 8 as the next digit of the answer. 
Result so far: 1708.0
Deduct 336 from 339 and we're left with 3.
Take the next digit (8) from the dividend and append it to 3, then repeat: 38 / 42

Let's proceed to step 6:
When dividing 38 by 42, we get 0 with a remainder of 38.
The number 0 becomes the next digit in our result. 
Result so far: 17080.0
Deduct 0 from 38 and we're left 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.

Advancing to step 7:
When dividing 380 by 42, we get 9 with a remainder of 2.
The next digit of our result is 9. 
Result so far: 17080.9
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.

Advancing to step 8:
If we divide 20 by 42, we get 0 and a remainder of 20.
The number 0 becomes the next digit in our result. 
Result so far: 17080.9
Deduct 0 from 20 and we're left 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.

Going ahead 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: 17080.904
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.

Going ahead to step 10:
42 can be fit into 320 7 times, resulting in a remainder of 26.
Record the quotient 7 as the next digit in the result. 
Result so far: 17080.9047
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.

On to step 11:
42 goes into 260 6 times with a remainder of 8.
Write down 6 as next digit of the result. 
Result so far: 17080.90476
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 12:
80 divided by 42 is 1 with a remainder of 38.
The next digit of our result is 1. 
Result so far: 17080.904761
If we subtract 42 from 80, we get 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:
If we divide 380 by 42, we get 9 and a remainder of 2.
Put 9 as the next digit of the answer. 
Result so far: 17080.9047619
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.

Let's proceed to step 14:
42 can be fit into 20 0 times, resulting in a remainder of 20.
Record the quotient 0 as the next digit in the result. 
Result so far: 17080.9047619
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.

After the division, we end up with 17080.9047619 and a remainder of 2e-08.