Let's divide 66120874 by 550
We want to figure out the number of times 66120874 can be divided by 550.

Let's proceed to step 1:
The number 550 fits into 6 0 times, leaving a remainder of 6.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 6, we end up with 6.
Append the next digit (6) from the dividend to 6 and continue with: 66 / 550

Advancing to step 2:
The number 550 fits into 66 0 times, leaving a remainder of 66.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 66, we get 66.
Grab the next digit (1) from the dividend, add it to 66, then carry on: 661 / 550

On to step 3:
When dividing 661 by 550, we get 1 with a remainder of 111.
The next digit of our result is 1. 
Result so far: 1.0
The remainder is 111 after subtracting 550 from 661.
Take the next digit (2) from the dividend and append it to 111, then repeat: 1112 / 550

Moving on to step 4:
If we divide 1112 by 550, we get 2 and a remainder of 12.
Record the quotient 2 as the next digit in the result. 
Result so far: 12.0
Subtracting 1100 from 1112 leaves us with 12.
Fetch the next digit (0) from the dividend, attach it to 12 and continue: 120 / 550

Going ahead to step 5:
120 divided by 550 is 0 with a remainder of 120.
Record the quotient 0 as the next digit in the result. 
Result so far: 120.0
Subtracting 0 from 120 leaves us with 120.
Bring next digit (8) of the dividend behind the 120 and repeat the process: 1208 / 550

Advancing to step 6:
550 can be fit into 1208 2 times, resulting in a remainder of 108.
Record the quotient 2 as the next digit in the result. 
Result so far: 1202.0
If we take 1100 away from 1208, we end up with 108.
Include the next digit (7) from the dividend after 108, then repeat: 1087 / 550

Going ahead to step 7:
550 can be fit into 1087 1 times, resulting in a remainder of 537.
The next digit of our result is 1. 
Result so far: 12021.0
If we subtract 550 from 1087, we get 537.
Fetch the next digit (4) from the dividend, attach it to 537 and continue: 5374 / 550

Advancing to step 8:
If we divide 5374 by 550, we get 9 and a remainder of 424.
The number 9 becomes the next digit in our result. 
Result so far: 120219.0
Subtracting 4950 from 5374 leaves us with 424.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4240, and continue the process.

Going ahead to step 9:
When dividing 4240 by 550, we get 7 with a remainder of 390.
The number 7 becomes the next digit in our result. 
Result so far: 120219.7
Subtract 3850 from 4240 to get 390.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3900, and continue the process.

Step 10:
When dividing 3900 by 550, we get 7 with a remainder of 50.
The number 7 becomes the next digit in our result. 
Result so far: 120219.77
The remainder is 50 after subtracting 3850 from 3900.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

The final outcome is 120219.77, with a leftover of 0.05.