We look at the division of 78634985 by 457 
Our goal is to divide 78634985 by 457.

Advancing to step 1:
457 can be fit into 7 0 times, resulting in a remainder of 7.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 7 to get 7.
Bring next digit (8) of the dividend behind the 7 and repeat the process: 78 / 457

Let's proceed to step 2:
457 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
Deduct 0 from 78 and we're left with 78.
Bring next digit (6) of the dividend behind the 78 and repeat the process: 786 / 457

On to step 3:
457 goes into 786 1 times with a remainder of 329.
The next digit of our result is 1. 
Result so far: 1.0
Subtract 457 from 786 to get 329.
Include the next digit (3) from the dividend after 329, then repeat: 3293 / 457

On to step 4:
If we divide 3293 by 457, we get 7 and a remainder of 94.
Record the quotient 7 as the next digit in the result. 
Result so far: 17.0
Subtracting 3199 from 3293 leaves us with 94.
Include the next digit (4) from the dividend after 94, then repeat: 944 / 457

Advancing to step 5:
When dividing 944 by 457, we get 2 with a remainder of 30.
Use 2 as the next digit of our solution. 
Result so far: 172.0
Deduct 914 from 944 and we're left with 30.
Take the next digit (9) from the dividend and append it to 30, then repeat: 309 / 457

Moving on to step 6:
When dividing 309 by 457, we get 0 with a remainder of 309.
Write down 0 as next digit of the result. 
Result so far: 1720.0
Subtracting 0 from 309 leaves us with 309.
Fetch the next digit (8) from the dividend, attach it to 309 and continue: 3098 / 457

On to step 7:
457 goes into 3098 6 times with a remainder of 356.
The next digit of our result is 6. 
Result so far: 17206.0
Subtracting 2742 from 3098 leaves us with 356.
Take the next digit (5) from the dividend and append it to 356, then repeat: 3565 / 457

On to step 8:
The number 457 fits into 3565 7 times, leaving a remainder of 366.
Use 7 as the next digit of our solution. 
Result so far: 172067.0
If we take 3199 away from 3565, we end up with 366.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3660, and continue the process.

Advancing to step 9:
The number 457 fits into 3660 8 times, leaving a remainder of 4.
Record the quotient 8 as the next digit in the result. 
Result so far: 172067.8
If we take 3656 away from 3660, we end up with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Advancing to step 10:
40 divided by 457 is 0 with a remainder of 40.
Write down 0 as next digit of the result. 
Result so far: 172067.8
If we subtract 0 from 40, we get 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

On to step 11:
The number 457 fits into 400 0 times, leaving a remainder of 400.
The number 0 becomes the next digit in our result. 
Result so far: 172067.8
The remainder is 400 after subtracting 0 from 400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4000, and continue the process.

The final result is 172067.8 with a remainder of 0.04.