We're dividing 77180664 by 121 
We're looking to find how many times 121 goes into 77180664.

Going ahead to step 1:
If we divide 7 by 121, we get 0 and a remainder of 7.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 7 and we're left with 7.
Fetch the next digit (7) from the dividend, attach it to 7 and continue: 77 / 121

Advancing to step 2:
121 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
Subtracting 0 from 77 leaves us with 77.
Take the next digit (1) from the dividend and append it to 77, then repeat: 771 / 121

On to step 3:
771 divided by 121 is 6 with a remainder of 45.
The next digit of our result is 6. 
Result so far: 6.0
If we take 726 away from 771, we end up with 45.
Bring next digit (8) of the dividend behind the 45 and repeat the process: 458 / 121

Going ahead to step 4:
458 divided by 121 is 3 with a remainder of 95.
Put 3 as the next digit of the answer. 
Result so far: 63.0
The remainder is 95 after subtracting 363 from 458.
Bring next digit (0) of the dividend behind the 95 and repeat the process: 950 / 121

Let's proceed to step 5:
950 divided by 121 is 7 with a remainder of 103.
Put 7 as the next digit of the answer. 
Result so far: 637.0
Subtract 847 from 950 to get 103.
Fetch the next digit (6) from the dividend, attach it to 103 and continue: 1036 / 121

Going ahead to step 6:
1036 divided by 121 is 8 with a remainder of 68.
The next digit of our result is 8. 
Result so far: 6378.0
The remainder is 68 after subtracting 968 from 1036.
Include the next digit (6) from the dividend after 68, then repeat: 686 / 121

On to step 7:
If we divide 686 by 121, we get 5 and a remainder of 81.
Write down 5 as next digit of the result. 
Result so far: 63785.0
The remainder is 81 after subtracting 605 from 686.
Take the next digit (4) from the dividend and append it to 81, then repeat: 814 / 121

Step 8:
When dividing 814 by 121, we get 6 with a remainder of 88.
Use 6 as the next digit of our solution. 
Result so far: 637856.0
Deduct 726 from 814 and we're left with 88.
Since there are no more digits in the dividend, we add a zero to the remainder making it 880, and continue the process.

Moving on to step 9:
If we divide 880 by 121, we get 7 and a remainder of 33.
Put 7 as the next digit of the answer. 
Result so far: 637856.7
The remainder is 33 after subtracting 847 from 880.
Since there are no more digits in the dividend, we add a zero to the remainder making it 330, and continue the process.

Moving on to step 10:
121 goes into 330 2 times with a remainder of 88.
Record the quotient 2 as the next digit in the result. 
Result so far: 637856.72
Subtract 242 from 330 to get 88.
Since there are no more digits in the dividend, we add a zero to the remainder making it 880, and continue the process.

Moving on to step 11:
880 divided by 121 is 7 with a remainder of 33.
Use 7 as the next digit of our solution. 
Result so far: 637856.727
Subtracting 847 from 880 leaves us with 33.
Since there are no more digits in the dividend, we add a zero to the remainder making it 330, and continue the process.

Moving on to step 12:
121 goes into 330 2 times with a remainder of 88.
Put 2 as the next digit of the answer. 
Result so far: 637856.7272
Subtracting 242 from 330 leaves us with 88.
Since there are no more digits in the dividend, we add a zero to the remainder making it 880, and continue the process.

Advancing to step 13:
121 goes into 880 7 times with a remainder of 33.
Put 7 as the next digit of the answer. 
Result so far: 637856.72727
Deduct 847 from 880 and we're left with 33.
Since there are no more digits in the dividend, we add a zero to the remainder making it 330, and continue the process.

Let's proceed to step 14:
121 can be fit into 330 2 times, resulting in a remainder of 88.
Record the quotient 2 as the next digit in the result. 
Result so far: 637856.727272
If we subtract 242 from 330, we get 88.
Since there are no more digits in the dividend, we add a zero to the remainder making it 880, and continue the process.

On to step 15:
121 goes into 880 7 times with a remainder of 33.
Write down 7 as next digit of the result. 
Result so far: 637856.7272727
Deduct 847 from 880 and we're left with 33.
Since there are no more digits in the dividend, we add a zero to the remainder making it 330, and continue the process.

Going ahead to step 16:
The number 121 fits into 330 2 times, leaving a remainder of 88.
The number 2 becomes the next digit in our result. 
Result so far: 637856.72727272
Subtract 242 from 330 to get 88.
Since there are no more digits in the dividend, we add a zero to the remainder making it 880, and continue the process.

After the division, we end up with 637856.72727272 and a remainder of 8.8e-08.