We look at the division of 77644889 by 921 
We're looking to find how many times 921 goes into 77644889.

Let's proceed to step 1:
When dividing 7 by 921, we get 0 with a remainder of 7.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 7, we get 7.
Fetch the next digit (7) from the dividend, attach it to 7 and continue: 77 / 921

On to step 2:
If we divide 77 by 921, we get 0 and a remainder of 77.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 77 and we're left with 77.
Take the next digit (6) from the dividend and append it to 77, then repeat: 776 / 921

Let's proceed to step 3:
921 goes into 776 0 times with a remainder of 776.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 776 after subtracting 0 from 776.
Append the next digit (4) from the dividend to 776 and continue with: 7764 / 921

On to step 4:
The number 921 fits into 7764 8 times, leaving a remainder of 396.
Use 8 as the next digit of our solution. 
Result so far: 8.0
The remainder is 396 after subtracting 7368 from 7764.
Take the next digit (4) from the dividend and append it to 396, then repeat: 3964 / 921

On to step 5:
3964 divided by 921 is 4 with a remainder of 280.
Record the quotient 4 as the next digit in the result. 
Result so far: 84.0
If we take 3684 away from 3964, we end up with 280.
Include the next digit (8) from the dividend after 280, then repeat: 2808 / 921

Advancing to step 6:
When dividing 2808 by 921, we get 3 with a remainder of 45.
The next digit of our result is 3. 
Result so far: 843.0
If we subtract 2763 from 2808, we get 45.
Append the next digit (8) from the dividend to 45 and continue with: 458 / 921

Step 7:
458 divided by 921 is 0 with a remainder of 458.
Use 0 as the next digit of our solution. 
Result so far: 8430.0
Subtracting 0 from 458 leaves us with 458.
Append the next digit (9) from the dividend to 458 and continue with: 4589 / 921

Going ahead to step 8:
4589 divided by 921 is 4 with a remainder of 905.
Write down 4 as next digit of the result. 
Result so far: 84304.0
Subtract 3684 from 4589 to get 905.
Since there are no more digits in the dividend, we add a zero to the remainder making it 9050, and continue the process.

Advancing to step 9:
921 goes into 9050 9 times with a remainder of 761.
Put 9 as the next digit of the answer. 
Result so far: 84304.9
Subtracting 8289 from 9050 leaves us with 761.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7610, and continue the process.

Let's proceed to step 10:
921 goes into 7610 8 times with a remainder of 242.
Record the quotient 8 as the next digit in the result. 
Result so far: 84304.98
If we subtract 7368 from 7610, we get 242.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2420, and continue the process.

Going ahead to step 11:
2420 divided by 921 is 2 with a remainder of 578.
The number 2 becomes the next digit in our result. 
Result so far: 84304.982
The remainder is 578 after subtracting 1842 from 2420.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5780, and continue the process.

Going ahead to step 12:
The number 921 fits into 5780 6 times, leaving a remainder of 254.
Put 6 as the next digit of the answer. 
Result so far: 84304.9826
Subtract 5526 from 5780 to get 254.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2540, and continue the process.

Moving on to step 13:
921 can be fit into 2540 2 times, resulting in a remainder of 698.
The number 2 becomes the next digit in our result. 
Result so far: 84304.98262
Subtracting 1842 from 2540 leaves us with 698.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6980, and continue the process.

Moving on to step 14:
921 can be fit into 6980 7 times, resulting in a remainder of 533.
The next digit of our result is 7. 
Result so far: 84304.982627
The remainder is 533 after subtracting 6447 from 6980.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5330, and continue the process.

Step 15:
The number 921 fits into 5330 5 times, leaving a remainder of 725.
Record the quotient 5 as the next digit in the result. 
Result so far: 84304.9826275
Subtracting 4605 from 5330 leaves us with 725.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7250, and continue the process.

On to step 16:
921 goes into 7250 7 times with a remainder of 803.
Write down 7 as next digit of the result. 
Result so far: 84304.98262757
If we subtract 6447 from 7250, we get 803.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8030, and continue the process.

The quotient of the division is 84304.98262757, and the remainder is 8.03e-07.