We look at the division of 77421742 by 120 
We want to divide 77421742 by 120.

Moving on to step 1:
When dividing 7 by 120, we get 0 with a remainder of 7.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 7 to get 7.
Append the next digit (7) from the dividend to 7 and continue with: 77 / 120

Moving on to step 2:
When dividing 77 by 120, we get 0 with a remainder of 77.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 77 after subtracting 0 from 77.
Fetch the next digit (4) from the dividend, attach it to 77 and continue: 774 / 120

Going ahead to step 3:
120 can be fit into 774 6 times, resulting in a remainder of 54.
The next digit of our result is 6. 
Result so far: 6.0
If we take 720 away from 774, we end up with 54.
Append the next digit (2) from the dividend to 54 and continue with: 542 / 120

On to step 4:
542 divided by 120 is 4 with a remainder of 62.
Use 4 as the next digit of our solution. 
Result so far: 64.0
If we take 480 away from 542, we end up with 62.
Bring next digit (1) of the dividend behind the 62 and repeat the process: 621 / 120

Advancing to step 5:
120 goes into 621 5 times with a remainder of 21.
The next digit of our result is 5. 
Result so far: 645.0
Subtracting 600 from 621 leaves us with 21.
Include the next digit (7) from the dividend after 21, then repeat: 217 / 120

Step 6:
120 goes into 217 1 times with a remainder of 97.
Put 1 as the next digit of the answer. 
Result so far: 6451.0
Subtracting 120 from 217 leaves us with 97.
Grab the next digit (4) from the dividend, add it to 97, then carry on: 974 / 120

Step 7:
120 can be fit into 974 8 times, resulting in a remainder of 14.
Write down 8 as next digit of the result. 
Result so far: 64518.0
Deduct 960 from 974 and we're left with 14.
Append the next digit (2) from the dividend to 14 and continue with: 142 / 120

Going ahead to step 8:
120 can be fit into 142 1 times, resulting in a remainder of 22.
Write down 1 as next digit of the result. 
Result so far: 645181.0
Deduct 120 from 142 and we're left with 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Going ahead to step 9:
The number 120 fits into 220 1 times, leaving a remainder of 100.
Put 1 as the next digit of the answer. 
Result so far: 645181.1
If we take 120 away from 220, we end up with 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1000, and continue the process.

Going ahead to step 10:
120 goes into 1000 8 times with a remainder of 40.
Use 8 as the next digit of our solution. 
Result so far: 645181.18
Deduct 960 from 1000 and we're left with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Moving on to step 11:
When dividing 400 by 120, we get 3 with a remainder of 40.
Record the quotient 3 as the next digit in the result. 
Result so far: 645181.183
Deduct 360 from 400 and we're left with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Step 12:
400 divided by 120 is 3 with a remainder of 40.
Use 3 as the next digit of our solution. 
Result so far: 645181.1833
If we subtract 360 from 400, we get 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Our division results in 645181.1833 with a remaining 0.0004.