We divide 15123890 by 702
We want to figure out the number of times 15123890 can be divided by 702.

Going ahead to step 1:
1 divided by 702 is 0 with a remainder of 1.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 1 to get 1.
Take the next digit (5) from the dividend and append it to 1, then repeat: 15 / 702

On to step 2:
The number 702 fits into 15 0 times, leaving a remainder of 15.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 15, we end up with 15.
Append the next digit (1) from the dividend to 15 and continue with: 151 / 702

Moving on to step 3:
If we divide 151 by 702, we get 0 and a remainder of 151.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 151 to get 151.
Fetch the next digit (2) from the dividend, attach it to 151 and continue: 1512 / 702

Step 4:
The number 702 fits into 1512 2 times, leaving a remainder of 108.
Write down 2 as next digit of the result. 
Result so far: 2.0
The remainder is 108 after subtracting 1404 from 1512.
Take the next digit (3) from the dividend and append it to 108, then repeat: 1083 / 702

On to step 5:
1083 divided by 702 is 1 with a remainder of 381.
The number 1 becomes the next digit in our result. 
Result so far: 21.0
If we subtract 702 from 1083, we get 381.
Take the next digit (8) from the dividend and append it to 381, then repeat: 3818 / 702

Moving on to step 6:
702 can be fit into 3818 5 times, resulting in a remainder of 308.
Record the quotient 5 as the next digit in the result. 
Result so far: 215.0
Deduct 3510 from 3818 and we're left with 308.
Append the next digit (9) from the dividend to 308 and continue with: 3089 / 702

On to step 7:
When dividing 3089 by 702, we get 4 with a remainder of 281.
Write down 4 as next digit of the result. 
Result so far: 2154.0
If we subtract 2808 from 3089, we get 281.
Grab the next digit (0) from the dividend, add it to 281, then carry on: 2810 / 702

On to step 8:
2810 divided by 702 is 4 with a remainder of 2.
The number 4 becomes the next digit in our result. 
Result so far: 21544.0
Subtracting 2808 from 2810 leaves us 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:
20 divided by 702 is 0 with a remainder of 20.
Use 0 as the next digit of our solution. 
Result so far: 21544.0
Deduct 0 from 20 and we're left 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.

Let's proceed to step 10:
If we divide 200 by 702, we get 0 and a remainder of 200.
Write down 0 as next digit of the result. 
Result so far: 21544.0
The remainder is 200 after subtracting 0 from 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2000, and continue the process.

The quotient of the division is 21544.0, and the remainder is 0.2.