74145313 divided by 15 
Let's see how many times 15 fits into 74145313.

Going ahead to step 1:
If we divide 7 by 15, we get 0 and a remainder of 7.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 7, we end up with 7.
Append the next digit (4) from the dividend to 7 and continue with: 74 / 15

Going ahead to step 2:
15 goes into 74 4 times with a remainder of 14.
Record the quotient 4 as the next digit in the result. 
Result so far: 4.0
If we take 60 away from 74, we end up with 14.
Take the next digit (1) from the dividend and append it to 14, then repeat: 141 / 15

Let's proceed to step 3:
15 can be fit into 141 9 times, resulting in a remainder of 6.
Put 9 as the next digit of the answer. 
Result so far: 49.0
Subtracting 135 from 141 leaves us with 6.
Bring next digit (4) of the dividend behind the 6 and repeat the process: 64 / 15

Step 4:
If we divide 64 by 15, we get 4 and a remainder of 4.
Write down 4 as next digit of the result. 
Result so far: 494.0
Subtracting 60 from 64 leaves us with 4.
Grab the next digit (5) from the dividend, add it to 4, then carry on: 45 / 15

On to step 5:
When dividing 45 by 15, we get 3 with a remainder of 0.
Record the quotient 3 as the next digit in the result. 
Result so far: 4943.0
Subtract 45 from 45 to get 0.
Bring next digit (3) of the dividend behind the 0 and repeat the process: 3 / 15

On to step 6:
15 can be fit into 3 0 times, resulting in a remainder of 3.
Use 0 as the next digit of our solution. 
Result so far: 49430.0
If we take 0 away from 3, we end up with 3.
Grab the next digit (1) from the dividend, add it to 3, then carry on: 31 / 15

Advancing to step 7:
When dividing 31 by 15, we get 2 with a remainder of 1.
The number 2 becomes the next digit in our result. 
Result so far: 494302.0
If we subtract 30 from 31, we get 1.
Fetch the next digit (3) from the dividend, attach it to 1 and continue: 13 / 15

Step 8:
15 goes into 13 0 times with a remainder of 13.
Write down 0 as next digit of the result. 
Result so far: 4943020.0
Subtract 0 from 13 to get 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Moving on to step 9:
When dividing 130 by 15, we get 8 with a remainder of 10.
Use 8 as the next digit of our solution. 
Result so far: 4943020.8
If we subtract 120 from 130, we get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Step 10:
100 divided by 15 is 6 with a remainder of 10.
Write down 6 as next digit of the result. 
Result so far: 4943020.86
Subtract 90 from 100 to get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

On to step 11:
When dividing 100 by 15, we get 6 with a remainder of 10.
The number 6 becomes the next digit in our result. 
Result so far: 4943020.866
Deduct 90 from 100 and we're left with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

The final outcome is 4943020.866, with a leftover of 0.001.