We divide 15369086 by 321
We want to divide 15369086 by 321.

Let's proceed to step 1:
1 divided by 321 is 0 with a remainder of 1.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 1 and we're left with 1.
Include the next digit (5) from the dividend after 1, then repeat: 15 / 321

Let's proceed to step 2:
321 goes into 15 0 times with a remainder of 15.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 15, we get 15.
Bring next digit (3) of the dividend behind the 15 and repeat the process: 153 / 321

Going ahead to step 3:
321 can be fit into 153 0 times, resulting in a remainder of 153.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 153 leaves us with 153.
Append the next digit (6) from the dividend to 153 and continue with: 1536 / 321

Moving on to step 4:
The number 321 fits into 1536 4 times, leaving a remainder of 252.
The next digit of our result is 4. 
Result so far: 4.0
Subtracting 1284 from 1536 leaves us with 252.
Take the next digit (9) from the dividend and append it to 252, then repeat: 2529 / 321

On to step 5:
2529 divided by 321 is 7 with a remainder of 282.
Use 7 as the next digit of our solution. 
Result so far: 47.0
If we subtract 2247 from 2529, we get 282.
Bring next digit (0) of the dividend behind the 282 and repeat the process: 2820 / 321

Going ahead to step 6:
The number 321 fits into 2820 8 times, leaving a remainder of 252.
Write down 8 as next digit of the result. 
Result so far: 478.0
Subtracting 2568 from 2820 leaves us with 252.
Take the next digit (8) from the dividend and append it to 252, then repeat: 2528 / 321

Going ahead to step 7:
If we divide 2528 by 321, we get 7 and a remainder of 281.
The next digit of our result is 7. 
Result so far: 4787.0
Subtract 2247 from 2528 to get 281.
Take the next digit (6) from the dividend and append it to 281, then repeat: 2816 / 321

Let's proceed to step 8:
When dividing 2816 by 321, we get 8 with a remainder of 248.
Record the quotient 8 as the next digit in the result. 
Result so far: 47878.0
Subtracting 2568 from 2816 leaves us with 248.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2480, and continue the process.

Going ahead to step 9:
If we divide 2480 by 321, we get 7 and a remainder of 233.
The next digit of our result is 7. 
Result so far: 47878.7
Subtract 2247 from 2480 to get 233.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2330, and continue the process.

Let's proceed to step 10:
321 can be fit into 2330 7 times, resulting in a remainder of 83.
Put 7 as the next digit of the answer. 
Result so far: 47878.77
If we take 2247 away from 2330, we end up with 83.
Since there are no more digits in the dividend, we add a zero to the remainder making it 830, and continue the process.

Our division results in 47878.77 with a remaining 0.083.