We look at the division of 66152942 by 121 
We're looking to find how many times 121 goes into 66152942.

Advancing to step 1:
When dividing 6 by 121, we get 0 with a remainder of 6.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 6, we end up with 6.
Take the next digit (6) from the dividend and append it to 6, then repeat: 66 / 121

Let's proceed to step 2:
The number 121 fits into 66 0 times, leaving a remainder of 66.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 66, we end up with 66.
Include the next digit (1) from the dividend after 66, then repeat: 661 / 121

Step 3:
121 goes into 661 5 times with a remainder of 56.
The next digit of our result is 5. 
Result so far: 5.0
Subtracting 605 from 661 leaves us with 56.
Include the next digit (5) from the dividend after 56, then repeat: 565 / 121

On to step 4:
121 can be fit into 565 4 times, resulting in a remainder of 81.
The number 4 becomes the next digit in our result. 
Result so far: 54.0
Deduct 484 from 565 and we're left with 81.
Bring next digit (2) of the dividend behind the 81 and repeat the process: 812 / 121

On to step 5:
The number 121 fits into 812 6 times, leaving a remainder of 86.
Write down 6 as next digit of the result. 
Result so far: 546.0
If we subtract 726 from 812, we get 86.
Grab the next digit (9) from the dividend, add it to 86, then carry on: 869 / 121

Advancing to step 6:
869 divided by 121 is 7 with a remainder of 22.
Use 7 as the next digit of our solution. 
Result so far: 5467.0
Subtract 847 from 869 to get 22.
Bring next digit (4) of the dividend behind the 22 and repeat the process: 224 / 121

Advancing to step 7:
When dividing 224 by 121, we get 1 with a remainder of 103.
Record the quotient 1 as the next digit in the result. 
Result so far: 54671.0
The remainder is 103 after subtracting 121 from 224.
Include the next digit (2) from the dividend after 103, then repeat: 1032 / 121

Advancing to step 8:
If we divide 1032 by 121, we get 8 and a remainder of 64.
Write down 8 as next digit of the result. 
Result so far: 546718.0
Subtracting 968 from 1032 leaves us with 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

Let's proceed to step 9:
If we divide 640 by 121, we get 5 and a remainder of 35.
Record the quotient 5 as the next digit in the result. 
Result so far: 546718.5
Deduct 605 from 640 and we're left with 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

On to step 10:
121 can be fit into 350 2 times, resulting in a remainder of 108.
Write down 2 as next digit of the result. 
Result so far: 546718.52
Subtract 242 from 350 to get 108.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1080, and continue the process.

Moving on to step 11:
If we divide 1080 by 121, we get 8 and a remainder of 112.
The next digit of our result is 8. 
Result so far: 546718.528
If we subtract 968 from 1080, we get 112.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1120, and continue the process.

Advancing to step 12:
When dividing 1120 by 121, we get 9 with a remainder of 31.
Write down 9 as next digit of the result. 
Result so far: 546718.5289
Deduct 1089 from 1120 and we're left with 31.
Since there are no more digits in the dividend, we add a zero to the remainder making it 310, and continue the process.

Moving on to step 13:
If we divide 310 by 121, we get 2 and a remainder of 68.
Put 2 as the next digit of the answer. 
Result so far: 546718.52892
Subtracting 242 from 310 leaves us with 68.
Since there are no more digits in the dividend, we add a zero to the remainder making it 680, and continue the process.

On to step 14:
The number 121 fits into 680 5 times, leaving a remainder of 75.
Use 5 as the next digit of our solution. 
Result so far: 546718.528925
If we subtract 605 from 680, we get 75.
Since there are no more digits in the dividend, we add a zero to the remainder making it 750, and continue the process.

Going ahead to step 15:
750 divided by 121 is 6 with a remainder of 24.
The next digit of our result is 6. 
Result so far: 546718.5289256
Subtract 726 from 750 to get 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Step 16:
121 can be fit into 240 1 times, resulting in a remainder of 119.
Use 1 as the next digit of our solution. 
Result so far: 546718.52892561
The remainder is 119 after subtracting 121 from 240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1190, and continue the process.

The final outcome is 546718.52892561, with a leftover of 1.19e-07.