78432517 ÷ 491 
Our goal is to divide 78432517 by 491.

Advancing to step 1:
491 goes into 7 0 times with a remainder of 7.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 7 to get 7.
Take the next digit (8) from the dividend and append it to 7, then repeat: 78 / 491

Advancing to step 2:
491 goes into 78 0 times with a remainder of 78.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 78 after subtracting 0 from 78.
Bring next digit (4) of the dividend behind the 78 and repeat the process: 784 / 491

Advancing to step 3:
491 goes into 784 1 times with a remainder of 293.
Use 1 as the next digit of our solution. 
Result so far: 1.0
If we take 491 away from 784, we end up with 293.
Append the next digit (3) from the dividend to 293 and continue with: 2933 / 491

Step 4:
491 goes into 2933 5 times with a remainder of 478.
Write down 5 as next digit of the result. 
Result so far: 15.0
If we take 2455 away from 2933, we end up with 478.
Include the next digit (2) from the dividend after 478, then repeat: 4782 / 491

Moving on to step 5:
The number 491 fits into 4782 9 times, leaving a remainder of 363.
Write down 9 as next digit of the result. 
Result so far: 159.0
Subtracting 4419 from 4782 leaves us with 363.
Bring next digit (5) of the dividend behind the 363 and repeat the process: 3635 / 491

On to step 6:
3635 divided by 491 is 7 with a remainder of 198.
Use 7 as the next digit of our solution. 
Result so far: 1597.0
Subtract 3437 from 3635 to get 198.
Append the next digit (1) from the dividend to 198 and continue with: 1981 / 491

Advancing to step 7:
1981 divided by 491 is 4 with a remainder of 17.
Record the quotient 4 as the next digit in the result. 
Result so far: 15974.0
Subtracting 1964 from 1981 leaves us with 17.
Fetch the next digit (7) from the dividend, attach it to 17 and continue: 177 / 491

Moving on to step 8:
The number 491 fits into 177 0 times, leaving a remainder of 177.
Write down 0 as next digit of the result. 
Result so far: 159740.0
Deduct 0 from 177 and we're left with 177.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1770, and continue the process.

On to step 9:
491 can be fit into 1770 3 times, resulting in a remainder of 297.
Write down 3 as next digit of the result. 
Result so far: 159740.3
Subtracting 1473 from 1770 leaves us with 297.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2970, and continue the process.

Let's proceed to step 10:
The number 491 fits into 2970 6 times, leaving a remainder of 24.
The number 6 becomes the next digit in our result. 
Result so far: 159740.36
Subtract 2946 from 2970 to get 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Let's proceed to step 11:
When dividing 240 by 491, we get 0 with a remainder of 240.
The number 0 becomes the next digit in our result. 
Result so far: 159740.36
Subtracting 0 from 240 leaves us with 240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2400, and continue the process.

On to step 12:
The number 491 fits into 2400 4 times, leaving a remainder of 436.
Put 4 as the next digit of the answer. 
Result so far: 159740.3604
If we subtract 1964 from 2400, we get 436.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4360, and continue the process.

Advancing to step 13:
491 can be fit into 4360 8 times, resulting in a remainder of 432.
Write down 8 as next digit of the result. 
Result so far: 159740.36048
Deduct 3928 from 4360 and we're left with 432.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4320, and continue the process.

On to step 14:
491 goes into 4320 8 times with a remainder of 392.
Put 8 as the next digit of the answer. 
Result so far: 159740.360488
If we take 3928 away from 4320, we end up with 392.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3920, and continue the process.

The final outcome is 159740.360488, with a leftover of 3.92e-05.