54824479 divided by 645 
We're looking to find how many times 645 goes into 54824479.

On to step 1:
5 divided by 645 is 0 with a remainder of 5.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 5 to get 5.
Bring next digit (4) of the dividend behind the 5 and repeat the process: 54 / 645

Let's proceed to step 2:
54 divided by 645 is 0 with a remainder of 54.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 54, we end up with 54.
Take the next digit (8) from the dividend and append it to 54, then repeat: 548 / 645

On to step 3:
548 divided by 645 is 0 with a remainder of 548.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 548 after subtracting 0 from 548.
Bring next digit (2) of the dividend behind the 548 and repeat the process: 5482 / 645

Let's proceed to step 4:
645 goes into 5482 8 times with a remainder of 322.
Use 8 as the next digit of our solution. 
Result so far: 8.0
Deduct 5160 from 5482 and we're left with 322.
Bring next digit (4) of the dividend behind the 322 and repeat the process: 3224 / 645

On to step 5:
The number 645 fits into 3224 4 times, leaving a remainder of 644.
The number 4 becomes the next digit in our result. 
Result so far: 84.0
If we subtract 2580 from 3224, we get 644.
Include the next digit (4) from the dividend after 644, then repeat: 6444 / 645

Moving on to step 6:
If we divide 6444 by 645, we get 9 and a remainder of 639.
Use 9 as the next digit of our solution. 
Result so far: 849.0
Deduct 5805 from 6444 and we're left with 639.
Bring next digit (7) of the dividend behind the 639 and repeat the process: 6397 / 645

Moving on to step 7:
The number 645 fits into 6397 9 times, leaving a remainder of 592.
Record the quotient 9 as the next digit in the result. 
Result so far: 8499.0
Subtract 5805 from 6397 to get 592.
Bring next digit (9) of the dividend behind the 592 and repeat the process: 5929 / 645

Moving on to step 8:
645 goes into 5929 9 times with a remainder of 124.
Use 9 as the next digit of our solution. 
Result so far: 84999.0
The remainder is 124 after subtracting 5805 from 5929.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1240, and continue the process.

Advancing to step 9:
When dividing 1240 by 645, we get 1 with a remainder of 595.
The next digit of our result is 1. 
Result so far: 84999.1
If we take 645 away from 1240, we end up with 595.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5950, and continue the process.

Going ahead to step 10:
If we divide 5950 by 645, we get 9 and a remainder of 145.
Write down 9 as next digit of the result. 
Result so far: 84999.19
Subtract 5805 from 5950 to get 145.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1450, and continue the process.

Advancing to step 11:
1450 divided by 645 is 2 with a remainder of 160.
Write down 2 as next digit of the result. 
Result so far: 84999.192
Deduct 1290 from 1450 and we're left with 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1600, and continue the process.

Let's proceed to step 12:
The number 645 fits into 1600 2 times, leaving a remainder of 310.
The number 2 becomes the next digit in our result. 
Result so far: 84999.1922
The remainder is 310 after subtracting 1290 from 1600.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3100, and continue the process.

The final result is 84999.1922 with a remainder of 0.0031.