We're dividing 42907590 by 4 
Let's see how many times 4 fits into 42907590.

On to step 1:
4 goes into 4 1 times with a remainder of 0.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Subtract 4 from 4 to get 0.
Bring next digit (2) of the dividend behind the 0 and repeat the process: 2 / 4

Step 2:
4 can be fit into 2 0 times, resulting in a remainder of 2.
The number 0 becomes the next digit in our result. 
Result so far: 10.0
Deduct 0 from 2 and we're left with 2.
Take the next digit (9) from the dividend and append it to 2, then repeat: 29 / 4

Going ahead to step 3:
4 can be fit into 29 7 times, resulting in a remainder of 1.
Record the quotient 7 as the next digit in the result. 
Result so far: 107.0
If we subtract 28 from 29, we get 1.
Take the next digit (0) from the dividend and append it to 1, then repeat: 10 / 4

Advancing to step 4:
The number 4 fits into 10 2 times, leaving a remainder of 2.
Record the quotient 2 as the next digit in the result. 
Result so far: 1072.0
Deduct 8 from 10 and we're left with 2.
Include the next digit (7) from the dividend after 2, then repeat: 27 / 4

Advancing to step 5:
If we divide 27 by 4, we get 6 and a remainder of 3.
The number 6 becomes the next digit in our result. 
Result so far: 10726.0
If we take 24 away from 27, we end up with 3.
Fetch the next digit (5) from the dividend, attach it to 3 and continue: 35 / 4

Advancing to step 6:
When dividing 35 by 4, we get 8 with a remainder of 3.
The next digit of our result is 8. 
Result so far: 107268.0
Subtracting 32 from 35 leaves us with 3.
Grab the next digit (9) from the dividend, add it to 3, then carry on: 39 / 4

Let's proceed to step 7:
If we divide 39 by 4, we get 9 and a remainder of 3.
Use 9 as the next digit of our solution. 
Result so far: 1072689.0
The remainder is 3 after subtracting 36 from 39.
Append the next digit (0) from the dividend to 3 and continue with: 30 / 4

Let's proceed to step 8:
4 goes into 30 7 times with a remainder of 2.
Use 7 as the next digit of our solution. 
Result so far: 10726897.0
If we take 28 away from 30, we end up with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Let's proceed to step 9:
The number 4 fits into 20 5 times, leaving a remainder of 0.
Put 5 as the next digit of the answer. 
Result so far: 10726897.5
Deduct 20 from 20 and we're left 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.

Going ahead to step 10:
4 can be fit into 0 0 times, resulting in a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 10726897.5
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.

Let's proceed to step 11:
4 goes into 0 0 times with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 10726897.5
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 10726897.5 and a remainder of 0.0.