We divide 660581 by 42
We want to divide 660581 by 42.

Let's proceed to step 1:
When dividing 6 by 42, we get 0 with a remainder of 6.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 6 to get 6.
Fetch the next digit (6) from the dividend, attach it to 6 and continue: 66 / 42

Going ahead to step 2:
If we divide 66 by 42, we get 1 and a remainder of 24.
Write down 1 as next digit of the result. 
Result so far: 1.0
Subtracting 42 from 66 leaves us with 24.
Take the next digit (0) from the dividend and append it to 24, then repeat: 240 / 42

Going ahead to step 3:
When dividing 240 by 42, we get 5 with a remainder of 30.
Put 5 as the next digit of the answer. 
Result so far: 15.0
Subtracting 210 from 240 leaves us with 30.
Take the next digit (5) from the dividend and append it to 30, then repeat: 305 / 42

Advancing to step 4:
The number 42 fits into 305 7 times, leaving a remainder of 11.
Record the quotient 7 as the next digit in the result. 
Result so far: 157.0
If we take 294 away from 305, we end up with 11.
Include the next digit (8) from the dividend after 11, then repeat: 118 / 42

On to step 5:
42 goes into 118 2 times with a remainder of 34.
Record the quotient 2 as the next digit in the result. 
Result so far: 1572.0
The remainder is 34 after subtracting 84 from 118.
Take the next digit (1) from the dividend and append it to 34, then repeat: 341 / 42

Moving on to step 6:
341 divided by 42 is 8 with a remainder of 5.
The number 8 becomes the next digit in our result. 
Result so far: 15728.0
If we subtract 336 from 341, we get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Step 7:
If we divide 50 by 42, we get 1 and a remainder of 8.
The number 1 becomes the next digit in our result. 
Result so far: 15728.1
If we subtract 42 from 50, 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.

Moving on to step 8:
80 divided by 42 is 1 with a remainder of 38.
Record the quotient 1 as the next digit in the result. 
Result so far: 15728.11
Deduct 42 from 80 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.

The final result is 15728.11 with a remainder of 0.038.