51668966 ÷ 120 
We want to figure out the number of times 51668966 can be divided by 120.

Let's proceed to step 1:
The number 120 fits into 5 0 times, leaving a remainder of 5.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 5 and we're left with 5.
Include the next digit (1) from the dividend after 5, then repeat: 51 / 120

Going ahead to step 2:
51 divided by 120 is 0 with a remainder of 51.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 51, we end up with 51.
Bring next digit (6) of the dividend behind the 51 and repeat the process: 516 / 120

Moving on to step 3:
If we divide 516 by 120, we get 4 and a remainder of 36.
The number 4 becomes the next digit in our result. 
Result so far: 4.0
The remainder is 36 after subtracting 480 from 516.
Fetch the next digit (6) from the dividend, attach it to 36 and continue: 366 / 120

Moving on to step 4:
The number 120 fits into 366 3 times, leaving a remainder of 6.
Write down 3 as next digit of the result. 
Result so far: 43.0
If we subtract 360 from 366, we get 6.
Take the next digit (8) from the dividend and append it to 6, then repeat: 68 / 120

On to step 5:
The number 120 fits into 68 0 times, leaving a remainder of 68.
Write down 0 as next digit of the result. 
Result so far: 430.0
The remainder is 68 after subtracting 0 from 68.
Bring next digit (9) of the dividend behind the 68 and repeat the process: 689 / 120

Going ahead to step 6:
120 goes into 689 5 times with a remainder of 89.
Put 5 as the next digit of the answer. 
Result so far: 4305.0
If we take 600 away from 689, we end up with 89.
Bring next digit (6) of the dividend behind the 89 and repeat the process: 896 / 120

Advancing to step 7:
When dividing 896 by 120, we get 7 with a remainder of 56.
Put 7 as the next digit of the answer. 
Result so far: 43057.0
Subtracting 840 from 896 leaves us with 56.
Bring next digit (6) of the dividend behind the 56 and repeat the process: 566 / 120

Step 8:
120 can be fit into 566 4 times, resulting in a remainder of 86.
Use 4 as the next digit of our solution. 
Result so far: 430574.0
The remainder is 86 after subtracting 480 from 566.
Since there are no more digits in the dividend, we add a zero to the remainder making it 860, and continue the process.

On to step 9:
120 goes into 860 7 times with a remainder of 20.
The number 7 becomes the next digit in our result. 
Result so far: 430574.7
The remainder is 20 after subtracting 840 from 860.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Step 10:
If we divide 200 by 120, we get 1 and a remainder of 80.
Record the quotient 1 as the next digit in the result. 
Result so far: 430574.71
Subtract 120 from 200 to get 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Advancing to step 11:
800 divided by 120 is 6 with a remainder of 80.
The next digit of our result is 6. 
Result so far: 430574.716
Subtract 720 from 800 to get 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

On to step 12:
800 divided by 120 is 6 with a remainder of 80.
Put 6 as the next digit of the answer. 
Result so far: 430574.7166
Deduct 720 from 800 and we're left with 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Our division results in 430574.7166 with a remaining 0.0008.