Let's divide 77281893 by 648
We're looking to find how many times 648 goes into 77281893.

Advancing to step 1:
When dividing 7 by 648, we get 0 with a remainder of 7.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 7, we get 7.
Append the next digit (7) from the dividend to 7 and continue with: 77 / 648

On to step 2:
The number 648 fits into 77 0 times, leaving a remainder of 77.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 77 and we're left with 77.
Grab the next digit (2) from the dividend, add it to 77, then carry on: 772 / 648

On to step 3:
648 goes into 772 1 times with a remainder of 124.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Deduct 648 from 772 and we're left with 124.
Fetch the next digit (8) from the dividend, attach it to 124 and continue: 1248 / 648

Step 4:
648 can be fit into 1248 1 times, resulting in a remainder of 600.
Write down 1 as next digit of the result. 
Result so far: 11.0
The remainder is 600 after subtracting 648 from 1248.
Take the next digit (1) from the dividend and append it to 600, then repeat: 6001 / 648

Moving on to step 5:
648 goes into 6001 9 times with a remainder of 169.
Put 9 as the next digit of the answer. 
Result so far: 119.0
The remainder is 169 after subtracting 5832 from 6001.
Append the next digit (8) from the dividend to 169 and continue with: 1698 / 648

Let's proceed to step 6:
When dividing 1698 by 648, we get 2 with a remainder of 402.
Put 2 as the next digit of the answer. 
Result so far: 1192.0
If we take 1296 away from 1698, we end up with 402.
Fetch the next digit (9) from the dividend, attach it to 402 and continue: 4029 / 648

Step 7:
648 goes into 4029 6 times with a remainder of 141.
The next digit of our result is 6. 
Result so far: 11926.0
Subtracting 3888 from 4029 leaves us with 141.
Include the next digit (3) from the dividend after 141, then repeat: 1413 / 648

Advancing to step 8:
The number 648 fits into 1413 2 times, leaving a remainder of 117.
Record the quotient 2 as the next digit in the result. 
Result so far: 119262.0
If we subtract 1296 from 1413, we get 117.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1170, and continue the process.

Advancing to step 9:
1170 divided by 648 is 1 with a remainder of 522.
The next digit of our result is 1. 
Result so far: 119262.1
If we subtract 648 from 1170, we get 522.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5220, and continue the process.

Going ahead to step 10:
When dividing 5220 by 648, we get 8 with a remainder of 36.
Put 8 as the next digit of the answer. 
Result so far: 119262.18
The remainder is 36 after subtracting 5184 from 5220.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Moving on to step 11:
648 goes into 360 0 times with a remainder of 360.
Put 0 as the next digit of the answer. 
Result so far: 119262.18
If we take 0 away from 360, we end up with 360.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3600, and continue the process.

On to step 12:
When dividing 3600 by 648, we get 5 with a remainder of 360.
The next digit of our result is 5. 
Result so far: 119262.1805
If we subtract 3240 from 3600, we get 360.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3600, and continue the process.

Going ahead to step 13:
648 goes into 3600 5 times with a remainder of 360.
Write down 5 as next digit of the result. 
Result so far: 119262.18055
Subtracting 3240 from 3600 leaves us with 360.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3600, and continue the process.

Our division results in 119262.18055 with a remaining 0.00036.