361573 divided by 42 
Our goal is to divide 361573 by 42.

On to step 1:
3 divided by 42 is 0 with a remainder of 3.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 3 and we're left with 3.
Fetch the next digit (6) from the dividend, attach it to 3 and continue: 36 / 42

On to step 2:
42 goes into 36 0 times with a remainder of 36.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 36 leaves us with 36.
Bring next digit (1) of the dividend behind the 36 and repeat the process: 361 / 42

Advancing to step 3:
42 can be fit into 361 8 times, resulting in a remainder of 25.
Record the quotient 8 as the next digit in the result. 
Result so far: 8.0
If we take 336 away from 361, we end up with 25.
Bring next digit (5) of the dividend behind the 25 and repeat the process: 255 / 42

Advancing to step 4:
255 divided by 42 is 6 with a remainder of 3.
Use 6 as the next digit of our solution. 
Result so far: 86.0
Deduct 252 from 255 and we're left with 3.
Include the next digit (7) from the dividend after 3, then repeat: 37 / 42

Moving on to step 5:
42 can be fit into 37 0 times, resulting in a remainder of 37.
Put 0 as the next digit of the answer. 
Result so far: 860.0
Subtract 0 from 37 to get 37.
Fetch the next digit (3) from the dividend, attach it to 37 and continue: 373 / 42

Moving on to step 6:
373 divided by 42 is 8 with a remainder of 37.
Write down 8 as next digit of the result. 
Result so far: 8608.0
If we take 336 away from 373, we end up with 37.
Since there are no more digits in the dividend, we add a zero to the remainder making it 370, and continue the process.

Advancing to step 7:
370 divided by 42 is 8 with a remainder of 34.
Use 8 as the next digit of our solution. 
Result so far: 8608.8
If we subtract 336 from 370, 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 8:
The number 42 fits into 340 8 times, leaving a remainder of 4.
Use 8 as the next digit of our solution. 
Result so far: 8608.88
Deduct 336 from 340 and we're left with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

After the division, we end up with 8608.88 and a remainder of 0.004.