We look at the division of 77423990 by 454 
Our goal is to divide 77423990 by 454.

Advancing to step 1:
454 can be fit into 7 0 times, resulting in a remainder of 7.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 7 and we're left with 7.
Take the next digit (7) from the dividend and append it to 7, then repeat: 77 / 454

Moving on to step 2:
454 can be fit into 77 0 times, resulting in a remainder of 77.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 77 after subtracting 0 from 77.
Grab the next digit (4) from the dividend, add it to 77, then carry on: 774 / 454

Let's proceed to step 3:
454 goes into 774 1 times with a remainder of 320.
Put 1 as the next digit of the answer. 
Result so far: 1.0
If we subtract 454 from 774, we get 320.
Grab the next digit (2) from the dividend, add it to 320, then carry on: 3202 / 454

Step 4:
The number 454 fits into 3202 7 times, leaving a remainder of 24.
The number 7 becomes the next digit in our result. 
Result so far: 17.0
Deduct 3178 from 3202 and we're left with 24.
Grab the next digit (3) from the dividend, add it to 24, then carry on: 243 / 454

Going ahead to step 5:
If we divide 243 by 454, we get 0 and a remainder of 243.
The next digit of our result is 0. 
Result so far: 170.0
Subtract 0 from 243 to get 243.
Include the next digit (9) from the dividend after 243, then repeat: 2439 / 454

Moving on to step 6:
If we divide 2439 by 454, we get 5 and a remainder of 169.
The next digit of our result is 5. 
Result so far: 1705.0
If we take 2270 away from 2439, we end up with 169.
Grab the next digit (9) from the dividend, add it to 169, then carry on: 1699 / 454

Advancing to step 7:
1699 divided by 454 is 3 with a remainder of 337.
The next digit of our result is 3. 
Result so far: 17053.0
The remainder is 337 after subtracting 1362 from 1699.
Fetch the next digit (0) from the dividend, attach it to 337 and continue: 3370 / 454

Moving on to step 8:
When dividing 3370 by 454, we get 7 with a remainder of 192.
The next digit of our result is 7. 
Result so far: 170537.0
Subtracting 3178 from 3370 leaves us with 192.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1920, and continue the process.

On to step 9:
1920 divided by 454 is 4 with a remainder of 104.
Write down 4 as next digit of the result. 
Result so far: 170537.4
Subtract 1816 from 1920 to get 104.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1040, and continue the process.

Moving on to step 10:
The number 454 fits into 1040 2 times, leaving a remainder of 132.
The next digit of our result is 2. 
Result so far: 170537.42
Subtracting 908 from 1040 leaves us with 132.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1320, and continue the process.

Let's proceed to step 11:
454 goes into 1320 2 times with a remainder of 412.
Write down 2 as next digit of the result. 
Result so far: 170537.422
If we take 908 away from 1320, we end up with 412.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4120, and continue the process.

The quotient of the division is 170537.422, and the remainder is 0.0412.