We look at the division of 217749 by 42 
We want to figure out the number of times 217749 can be divided by 42.

On to step 1:
When dividing 2 by 42, we get 0 with a remainder of 2.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 2 leaves us with 2.
Grab the next digit (1) from the dividend, add it to 2, then carry on: 21 / 42

Let's proceed to step 2:
If we divide 21 by 42, we get 0 and a remainder of 21.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 21, we get 21.
Append the next digit (7) from the dividend to 21 and continue with: 217 / 42

Let's proceed to step 3:
If we divide 217 by 42, we get 5 and a remainder of 7.
Put 5 as the next digit of the answer. 
Result so far: 5.0
Subtract 210 from 217 to get 7.
Include the next digit (7) from the dividend after 7, then repeat: 77 / 42

Moving on to step 4:
77 divided by 42 is 1 with a remainder of 35.
The next digit of our result is 1. 
Result so far: 51.0
Deduct 42 from 77 and we're left with 35.
Fetch the next digit (4) from the dividend, attach it to 35 and continue: 354 / 42

Advancing to step 5:
354 divided by 42 is 8 with a remainder of 18.
Record the quotient 8 as the next digit in the result. 
Result so far: 518.0
The remainder is 18 after subtracting 336 from 354.
Append the next digit (9) from the dividend to 18 and continue with: 189 / 42

Let's proceed to step 6:
If we divide 189 by 42, we get 4 and a remainder of 21.
Put 4 as the next digit of the answer. 
Result so far: 5184.0
Subtracting 168 from 189 leaves us with 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

Going ahead to step 7:
42 goes into 210 5 times with a remainder of 0.
Record the quotient 5 as the next digit in the result. 
Result so far: 5184.5
The remainder is 0 after subtracting 210 from 210.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Let's proceed to step 8:
0 divided by 42 is 0 with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 5184.5
If we take 0 away from 0, we end up with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Step 9:
42 can be fit into 0 0 times, resulting in a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 5184.5
If we subtract 0 from 0, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The quotient of the division is 5184.5, and the remainder is 0.0.