Let's divide 42070 by 40
Our goal is to divide 42070 by 40.

Step 1:
40 can be fit into 4 0 times, resulting in a remainder of 4.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 4 leaves us with 4.
Grab the next digit (2) from the dividend, add it to 4, then carry on: 42 / 40

Going ahead to step 2:
42 divided by 40 is 1 with a remainder of 2.
Use 1 as the next digit of our solution. 
Result so far: 1.0
The remainder is 2 after subtracting 40 from 42.
Fetch the next digit (0) from the dividend, attach it to 2 and continue: 20 / 40

Moving on to step 3:
40 goes into 20 0 times with a remainder of 20.
Put 0 as the next digit of the answer. 
Result so far: 10.0
If we subtract 0 from 20, we get 20.
Append the next digit (7) from the dividend to 20 and continue with: 207 / 40

Advancing to step 4:
207 divided by 40 is 5 with a remainder of 7.
The next digit of our result is 5. 
Result so far: 105.0
Subtracting 200 from 207 leaves us with 7.
Fetch the next digit (0) from the dividend, attach it to 7 and continue: 70 / 40

Let's proceed to step 5:
If we divide 70 by 40, we get 1 and a remainder of 30.
Use 1 as the next digit of our solution. 
Result so far: 1051.0
If we subtract 40 from 70, we get 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

On to step 6:
40 can be fit into 300 7 times, resulting in a remainder of 20.
Put 7 as the next digit of the answer. 
Result so far: 1051.7
If we take 280 away from 300, we end up with 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 7:
When dividing 200 by 40, we get 5 with a remainder of 0.
The number 5 becomes the next digit in our result. 
Result so far: 1051.75
The remainder is 0 after subtracting 200 from 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Going ahead to step 8:
When dividing 0 by 40, we get 0 with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 1051.75
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.

Going ahead to step 9:
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: 1051.75
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 final outcome is 1051.75, with a leftover of 0.0.