936821 ÷ 42 
We're looking to find how many times 42 goes into 936821.

Moving on to step 1:
If we divide 9 by 42, we get 0 and a remainder of 9.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 9 and we're left with 9.
Append the next digit (3) from the dividend to 9 and continue with: 93 / 42

Going ahead to step 2:
When dividing 93 by 42, we get 2 with a remainder of 9.
Put 2 as the next digit of the answer. 
Result so far: 2.0
If we subtract 84 from 93, we get 9.
Include the next digit (6) from the dividend after 9, then repeat: 96 / 42

Going ahead to step 3:
When dividing 96 by 42, we get 2 with a remainder of 12.
Put 2 as the next digit of the answer. 
Result so far: 22.0
The remainder is 12 after subtracting 84 from 96.
Append the next digit (8) from the dividend to 12 and continue with: 128 / 42

Going ahead to step 4:
128 divided by 42 is 3 with a remainder of 2.
Put 3 as the next digit of the answer. 
Result so far: 223.0
If we subtract 126 from 128, we get 2.
Grab the next digit (2) from the dividend, add it to 2, then carry on: 22 / 42

On to step 5:
42 can be fit into 22 0 times, resulting in a remainder of 22.
Write down 0 as next digit of the result. 
Result so far: 2230.0
The remainder is 22 after subtracting 0 from 22.
Bring next digit (1) of the dividend behind the 22 and repeat the process: 221 / 42

Step 6:
If we divide 221 by 42, we get 5 and a remainder of 11.
Use 5 as the next digit of our solution. 
Result so far: 22305.0
Deduct 210 from 221 and we're left with 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Advancing to step 7:
When dividing 110 by 42, we get 2 with a remainder of 26.
Record the quotient 2 as the next digit in the result. 
Result so far: 22305.2
If we take 84 away from 110, we end up with 26.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

Let's proceed to step 8:
42 goes into 260 6 times with a remainder of 8.
Write down 6 as next digit of the result. 
Result so far: 22305.26
Subtract 252 from 260 to 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 9:
When dividing 80 by 42, we get 1 with a remainder of 38.
Put 1 as the next digit of the answer. 
Result so far: 22305.261
The remainder is 38 after subtracting 42 from 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

On to step 10:
42 goes into 380 9 times with a remainder of 2.
Record the quotient 9 as the next digit in the result. 
Result so far: 22305.2619
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.

Step 11:
20 divided by 42 is 0 with a remainder of 20.
Put 0 as the next digit of the answer. 
Result so far: 22305.2619
If we subtract 0 from 20, we get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Step 12:
When dividing 200 by 42, we get 4 with a remainder of 32.
Put 4 as the next digit of the answer. 
Result so far: 22305.261904
Subtract 168 from 200 to 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.

Advancing to step 13:
When dividing 320 by 42, we get 7 with a remainder of 26.
Record the quotient 7 as the next digit in the result. 
Result so far: 22305.2619047
If we subtract 294 from 320, we 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.

Moving on to step 14:
42 can be fit into 260 6 times, resulting in a remainder of 8.
Record the quotient 6 as the next digit in the result. 
Result so far: 22305.26190476
The remainder is 8 after subtracting 252 from 260.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Our division results in 22305.26190476 with a remaining 8e-09.