We're dividing 407090 by 15 
We want to figure out the number of times 407090 can be divided by 15.

Moving on to step 1:
15 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
If we take 0 away from 4, we end up with 4.
Append the next digit (0) from the dividend to 4 and continue with: 40 / 15

Going ahead to step 2:
15 can be fit into 40 2 times, resulting in a remainder of 10.
Write down 2 as next digit of the result. 
Result so far: 2.0
The remainder is 10 after subtracting 30 from 40.
Include the next digit (7) from the dividend after 10, then repeat: 107 / 15

Going ahead to step 3:
When dividing 107 by 15, we get 7 with a remainder of 2.
The number 7 becomes the next digit in our result. 
Result so far: 27.0
If we take 105 away from 107, we end up with 2.
Bring next digit (0) of the dividend behind the 2 and repeat the process: 20 / 15

Moving on to step 4:
The number 15 fits into 20 1 times, leaving a remainder of 5.
The number 1 becomes the next digit in our result. 
Result so far: 271.0
The remainder is 5 after subtracting 15 from 20.
Grab the next digit (9) from the dividend, add it to 5, then carry on: 59 / 15

Advancing to step 5:
If we divide 59 by 15, we get 3 and a remainder of 14.
Write down 3 as next digit of the result. 
Result so far: 2713.0
The remainder is 14 after subtracting 45 from 59.
Bring next digit (0) of the dividend behind the 14 and repeat the process: 140 / 15

Advancing to step 6:
When dividing 140 by 15, we get 9 with a remainder of 5.
The next digit of our result is 9. 
Result so far: 27139.0
Subtract 135 from 140 to get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Advancing to step 7:
The number 15 fits into 50 3 times, leaving a remainder of 5.
Record the quotient 3 as the next digit in the result. 
Result so far: 27139.3
Deduct 45 from 50 and we're left with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Moving on to step 8:
50 divided by 15 is 3 with a remainder of 5.
The number 3 becomes the next digit in our result. 
Result so far: 27139.33
Subtract 45 from 50 to get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

The quotient of the division is 27139.33, and the remainder is 0.005.