15878013 ÷ 491 
We want to figure out the number of times 15878013 can be divided by 491.

Step 1:
The number 491 fits into 1 0 times, leaving a remainder of 1.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 1 to get 1.
Include the next digit (5) from the dividend after 1, then repeat: 15 / 491

Advancing to step 2:
491 can be fit into 15 0 times, resulting in a remainder of 15.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 15, we get 15.
Take the next digit (8) from the dividend and append it to 15, then repeat: 158 / 491

Moving on to step 3:
158 divided by 491 is 0 with a remainder of 158.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 158, we end up with 158.
Grab the next digit (7) from the dividend, add it to 158, then carry on: 1587 / 491

Advancing to step 4:
If we divide 1587 by 491, we get 3 and a remainder of 114.
Record the quotient 3 as the next digit in the result. 
Result so far: 3.0
If we subtract 1473 from 1587, we get 114.
Fetch the next digit (8) from the dividend, attach it to 114 and continue: 1148 / 491

Moving on to step 5:
1148 divided by 491 is 2 with a remainder of 166.
Put 2 as the next digit of the answer. 
Result so far: 32.0
If we take 982 away from 1148, we end up with 166.
Take the next digit (0) from the dividend and append it to 166, then repeat: 1660 / 491

Going ahead to step 6:
When dividing 1660 by 491, we get 3 with a remainder of 187.
The number 3 becomes the next digit in our result. 
Result so far: 323.0
The remainder is 187 after subtracting 1473 from 1660.
Append the next digit (1) from the dividend to 187 and continue with: 1871 / 491

On to step 7:
If we divide 1871 by 491, we get 3 and a remainder of 398.
The number 3 becomes the next digit in our result. 
Result so far: 3233.0
If we subtract 1473 from 1871, we get 398.
Append the next digit (3) from the dividend to 398 and continue with: 3983 / 491

Let's proceed to step 8:
3983 divided by 491 is 8 with a remainder of 55.
Write down 8 as next digit of the result. 
Result so far: 32338.0
Deduct 3928 from 3983 and we're left with 55.
Since there are no more digits in the dividend, we add a zero to the remainder making it 550, and continue the process.

Moving on to step 9:
491 goes into 550 1 times with a remainder of 59.
The next digit of our result is 1. 
Result so far: 32338.1
If we take 491 away from 550, we end up with 59.
Since there are no more digits in the dividend, we add a zero to the remainder making it 590, and continue the process.

Going ahead to step 10:
The number 491 fits into 590 1 times, leaving a remainder of 99.
Use 1 as the next digit of our solution. 
Result so far: 32338.11
The remainder is 99 after subtracting 491 from 590.
Since there are no more digits in the dividend, we add a zero to the remainder making it 990, and continue the process.

After the division, we end up with 32338.11 and a remainder of 0.099.