42310 ÷ 40 
We're looking to find how many times 40 goes into 42310.

Let's proceed to step 1:
40 can be fit into 4 0 times, resulting in a remainder of 4.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 4 after subtracting 0 from 4.
Fetch the next digit (2) from the dividend, attach it to 4 and continue: 42 / 40

Advancing to step 2:
The number 40 fits into 42 1 times, leaving a remainder of 2.
Put 1 as the next digit of the answer. 
Result so far: 1.0
If we subtract 40 from 42, we get 2.
Bring next digit (3) of the dividend behind the 2 and repeat the process: 23 / 40

On to step 3:
23 divided by 40 is 0 with a remainder of 23.
Use 0 as the next digit of our solution. 
Result so far: 10.0
Subtract 0 from 23 to get 23.
Fetch the next digit (1) from the dividend, attach it to 23 and continue: 231 / 40

On to step 4:
If we divide 231 by 40, we get 5 and a remainder of 31.
The number 5 becomes the next digit in our result. 
Result so far: 105.0
Subtracting 200 from 231 leaves us with 31.
Fetch the next digit (0) from the dividend, attach it to 31 and continue: 310 / 40

Going ahead to step 5:
40 goes into 310 7 times with a remainder of 30.
Write down 7 as next digit of the result. 
Result so far: 1057.0
Subtracting 280 from 310 leaves us with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Step 6:
When dividing 300 by 40, we get 7 with a remainder of 20.
Put 7 as the next digit of the answer. 
Result so far: 1057.7
Subtract 280 from 300 to 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.

Moving on to step 7:
When dividing 200 by 40, we get 5 with a remainder of 0.
Put 5 as the next digit of the answer. 
Result so far: 1057.75
If we subtract 200 from 200, 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.

On to step 8:
When dividing 0 by 40, we get 0 with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 1057.75
Subtracting 0 from 0 leaves us 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:
40 goes into 0 0 times with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 1057.75
Subtracting 0 from 0 leaves us 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.

After the division, we end up with 1057.75 and a remainder of 0.0.