We look at the division of 51521058 by 120 
We want to divide 51521058 by 120.

Let's proceed to step 1:
120 goes into 5 0 times with a remainder of 5.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 5 to get 5.
Take the next digit (1) from the dividend and append it to 5, then repeat: 51 / 120

Advancing to step 2:
When dividing 51 by 120, we get 0 with a remainder of 51.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 51 to get 51.
Bring next digit (5) of the dividend behind the 51 and repeat the process: 515 / 120

Moving on to step 3:
120 can be fit into 515 4 times, resulting in a remainder of 35.
Use 4 as the next digit of our solution. 
Result so far: 4.0
Subtracting 480 from 515 leaves us with 35.
Bring next digit (2) of the dividend behind the 35 and repeat the process: 352 / 120

Advancing to step 4:
352 divided by 120 is 2 with a remainder of 112.
Record the quotient 2 as the next digit in the result. 
Result so far: 42.0
If we take 240 away from 352, we end up with 112.
Bring next digit (1) of the dividend behind the 112 and repeat the process: 1121 / 120

Step 5:
If we divide 1121 by 120, we get 9 and a remainder of 41.
Record the quotient 9 as the next digit in the result. 
Result so far: 429.0
Subtracting 1080 from 1121 leaves us with 41.
Grab the next digit (0) from the dividend, add it to 41, then carry on: 410 / 120

Moving on to step 6:
The number 120 fits into 410 3 times, leaving a remainder of 50.
Put 3 as the next digit of the answer. 
Result so far: 4293.0
Subtract 360 from 410 to get 50.
Append the next digit (5) from the dividend to 50 and continue with: 505 / 120

Going ahead to step 7:
The number 120 fits into 505 4 times, leaving a remainder of 25.
The number 4 becomes the next digit in our result. 
Result so far: 42934.0
If we subtract 480 from 505, we get 25.
Grab the next digit (8) from the dividend, add it to 25, then carry on: 258 / 120

On to step 8:
If we divide 258 by 120, we get 2 and a remainder of 18.
The next digit of our result is 2. 
Result so far: 429342.0
The remainder is 18 after subtracting 240 from 258.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Advancing to step 9:
The number 120 fits into 180 1 times, leaving a remainder of 60.
The next digit of our result is 1. 
Result so far: 429342.1
Subtract 120 from 180 to get 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Moving on to step 10:
The number 120 fits into 600 5 times, leaving a remainder of 0.
Record the quotient 5 as the next digit in the result. 
Result so far: 429342.15
Subtract 600 from 600 to get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Advancing to step 11:
The number 120 fits into 0 0 times, leaving a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 429342.15
Subtracting 0 from 0 leaves us with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Step 12:
120 goes into 0 0 times with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 429342.15
The remainder is 0 after subtracting 0 from 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The quotient of the division is 429342.15, and the remainder is 0.0.