We're dividing 77890046 by 454 
Our goal is to divide 77890046 by 454.

Advancing to step 1:
The number 454 fits into 7 0 times, leaving a remainder of 7.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 7 leaves us with 7.
Include the next digit (7) from the dividend after 7, then repeat: 77 / 454

On to step 2:
If we divide 77 by 454, we get 0 and a remainder of 77.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 77 leaves us with 77.
Fetch the next digit (8) from the dividend, attach it to 77 and continue: 778 / 454

Advancing to step 3:
If we divide 778 by 454, we get 1 and a remainder of 324.
Write down 1 as next digit of the result. 
Result so far: 1.0
The remainder is 324 after subtracting 454 from 778.
Take the next digit (9) from the dividend and append it to 324, then repeat: 3249 / 454

Advancing to step 4:
When dividing 3249 by 454, we get 7 with a remainder of 71.
Use 7 as the next digit of our solution. 
Result so far: 17.0
Subtracting 3178 from 3249 leaves us with 71.
Include the next digit (0) from the dividend after 71, then repeat: 710 / 454

Advancing to step 5:
454 goes into 710 1 times with a remainder of 256.
Put 1 as the next digit of the answer. 
Result so far: 171.0
If we take 454 away from 710, we end up with 256.
Bring next digit (0) of the dividend behind the 256 and repeat the process: 2560 / 454

Advancing to step 6:
The number 454 fits into 2560 5 times, leaving a remainder of 290.
Put 5 as the next digit of the answer. 
Result so far: 1715.0
Subtract 2270 from 2560 to get 290.
Take the next digit (4) from the dividend and append it to 290, then repeat: 2904 / 454

Moving on to step 7:
454 can be fit into 2904 6 times, resulting in a remainder of 180.
Write down 6 as next digit of the result. 
Result so far: 17156.0
The remainder is 180 after subtracting 2724 from 2904.
Bring next digit (6) of the dividend behind the 180 and repeat the process: 1806 / 454

On to step 8:
454 can be fit into 1806 3 times, resulting in a remainder of 444.
Use 3 as the next digit of our solution. 
Result so far: 171563.0
The remainder is 444 after subtracting 1362 from 1806.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4440, and continue the process.

On to step 9:
454 goes into 4440 9 times with a remainder of 354.
Put 9 as the next digit of the answer. 
Result so far: 171563.9
If we subtract 4086 from 4440, we get 354.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3540, and continue the process.

Going ahead to step 10:
If we divide 3540 by 454, we get 7 and a remainder of 362.
The number 7 becomes the next digit in our result. 
Result so far: 171563.97
If we take 3178 away from 3540, we end up with 362.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3620, and continue the process.

Going ahead to step 11:
When dividing 3620 by 454, we get 7 with a remainder of 442.
Record the quotient 7 as the next digit in the result. 
Result so far: 171563.977
Subtracting 3178 from 3620 leaves us with 442.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4420, and continue the process.

The final result is 171563.977 with a remainder of 0.0442.