We look at the division of 77404638 by 221 
We want to divide 77404638 by 221.

Advancing to step 1:
If we divide 7 by 221, we get 0 and a remainder of 7.
The number 0 becomes the next digit in our 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 / 221

Let's proceed to step 2:
221 goes into 77 0 times with a remainder of 77.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 77, we get 77.
Bring next digit (4) of the dividend behind the 77 and repeat the process: 774 / 221

Going ahead to step 3:
774 divided by 221 is 3 with a remainder of 111.
Use 3 as the next digit of our solution. 
Result so far: 3.0
The remainder is 111 after subtracting 663 from 774.
Append the next digit (0) from the dividend to 111 and continue with: 1110 / 221

Step 4:
221 can be fit into 1110 5 times, resulting in a remainder of 5.
Put 5 as the next digit of the answer. 
Result so far: 35.0
If we subtract 1105 from 1110, we get 5.
Grab the next digit (4) from the dividend, add it to 5, then carry on: 54 / 221

Let's proceed to step 5:
The number 221 fits into 54 0 times, leaving a remainder of 54.
Use 0 as the next digit of our solution. 
Result so far: 350.0
Subtracting 0 from 54 leaves us with 54.
Fetch the next digit (6) from the dividend, attach it to 54 and continue: 546 / 221

Going ahead to step 6:
When dividing 546 by 221, we get 2 with a remainder of 104.
The number 2 becomes the next digit in our result. 
Result so far: 3502.0
Deduct 442 from 546 and we're left with 104.
Grab the next digit (3) from the dividend, add it to 104, then carry on: 1043 / 221

On to step 7:
1043 divided by 221 is 4 with a remainder of 159.
Write down 4 as next digit of the result. 
Result so far: 35024.0
If we subtract 884 from 1043, we get 159.
Bring next digit (8) of the dividend behind the 159 and repeat the process: 1598 / 221

Step 8:
221 can be fit into 1598 7 times, resulting in a remainder of 51.
The next digit of our result is 7. 
Result so far: 350247.0
If we subtract 1547 from 1598, we get 51.
Since there are no more digits in the dividend, we add a zero to the remainder making it 510, and continue the process.

Step 9:
If we divide 510 by 221, we get 2 and a remainder of 68.
Use 2 as the next digit of our solution. 
Result so far: 350247.2
Subtracting 442 from 510 leaves us with 68.
Since there are no more digits in the dividend, we add a zero to the remainder making it 680, and continue the process.

Moving on to step 10:
The number 221 fits into 680 3 times, leaving a remainder of 17.
The next digit of our result is 3. 
Result so far: 350247.23
If we take 663 away from 680, we end up with 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

On to step 11:
221 goes into 170 0 times with a remainder of 170.
The next digit of our result is 0. 
Result so far: 350247.23
If we take 0 away from 170, we end up with 170.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1700, and continue the process.

Moving on to step 12:
The number 221 fits into 1700 7 times, leaving a remainder of 153.
Write down 7 as next digit of the result. 
Result so far: 350247.2307
If we take 1547 away from 1700, we end up with 153.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1530, and continue the process.

Step 13:
When dividing 1530 by 221, we get 6 with a remainder of 204.
Use 6 as the next digit of our solution. 
Result so far: 350247.23076
The remainder is 204 after subtracting 1326 from 1530.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2040, and continue the process.

Going ahead to step 14:
When dividing 2040 by 221, we get 9 with a remainder of 51.
The number 9 becomes the next digit in our result. 
Result so far: 350247.230769
Subtracting 1989 from 2040 leaves us with 51.
Since there are no more digits in the dividend, we add a zero to the remainder making it 510, and continue the process.

Going ahead to step 15:
221 goes into 510 2 times with a remainder of 68.
Use 2 as the next digit of our solution. 
Result so far: 350247.2307692
Subtracting 442 from 510 leaves us with 68.
Since there are no more digits in the dividend, we add a zero to the remainder making it 680, and continue the process.

Let's proceed to step 16:
If we divide 680 by 221, we get 3 and a remainder of 17.
Write down 3 as next digit of the result. 
Result so far: 350247.23076923
Deduct 663 from 680 and we're left with 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

The quotient of the division is 350247.23076923, and the remainder is 1.7e-08.