We look at the division of 66412812 by 105 
We want to figure out the number of times 66412812 can be divided by 105.

Step 1:
105 goes into 6 0 times with a remainder of 6.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 6 leaves us with 6.
Grab the next digit (6) from the dividend, add it to 6, then carry on: 66 / 105

Advancing to step 2:
When dividing 66 by 105, we get 0 with a remainder of 66.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 66 leaves us with 66.
Append the next digit (4) from the dividend to 66 and continue with: 664 / 105

Moving on to step 3:
When dividing 664 by 105, we get 6 with a remainder of 34.
Write down 6 as next digit of the result. 
Result so far: 6.0
The remainder is 34 after subtracting 630 from 664.
Bring next digit (1) of the dividend behind the 34 and repeat the process: 341 / 105

Advancing to step 4:
If we divide 341 by 105, we get 3 and a remainder of 26.
The number 3 becomes the next digit in our result. 
Result so far: 63.0
Subtract 315 from 341 to get 26.
Append the next digit (2) from the dividend to 26 and continue with: 262 / 105

Let's proceed to step 5:
When dividing 262 by 105, we get 2 with a remainder of 52.
Put 2 as the next digit of the answer. 
Result so far: 632.0
If we subtract 210 from 262, we get 52.
Fetch the next digit (8) from the dividend, attach it to 52 and continue: 528 / 105

On to step 6:
105 can be fit into 528 5 times, resulting in a remainder of 3.
Use 5 as the next digit of our solution. 
Result so far: 6325.0
Subtracting 525 from 528 leaves us with 3.
Take the next digit (1) from the dividend and append it to 3, then repeat: 31 / 105

On to step 7:
The number 105 fits into 31 0 times, leaving a remainder of 31.
Write down 0 as next digit of the result. 
Result so far: 63250.0
The remainder is 31 after subtracting 0 from 31.
Fetch the next digit (2) from the dividend, attach it to 31 and continue: 312 / 105

On to step 8:
If we divide 312 by 105, we get 2 and a remainder of 102.
Put 2 as the next digit of the answer. 
Result so far: 632502.0
If we take 210 away from 312, we end up with 102.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1020, and continue the process.

Going ahead to step 9:
105 can be fit into 1020 9 times, resulting in a remainder of 75.
Record the quotient 9 as the next digit in the result. 
Result so far: 632502.9
Subtract 945 from 1020 to 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.

Moving on to step 10:
If we divide 750 by 105, we get 7 and a remainder of 15.
Write down 7 as next digit of the result. 
Result so far: 632502.97
Deduct 735 from 750 and we're left with 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Step 11:
105 goes into 150 1 times with a remainder of 45.
The number 1 becomes the next digit in our result. 
Result so far: 632502.971
Subtracting 105 from 150 leaves us with 45.
Since there are no more digits in the dividend, we add a zero to the remainder making it 450, and continue the process.

Let's proceed to step 12:
When dividing 450 by 105, we get 4 with a remainder of 30.
Record the quotient 4 as the next digit in the result. 
Result so far: 632502.9714
If we subtract 420 from 450, we get 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Step 13:
105 can be fit into 300 2 times, resulting in a remainder of 90.
Use 2 as the next digit of our solution. 
Result so far: 632502.97142
Subtract 210 from 300 to get 90.
Since there are no more digits in the dividend, we add a zero to the remainder making it 900, and continue the process.

Going ahead to step 14:
If we divide 900 by 105, we get 8 and a remainder of 60.
Put 8 as the next digit of the answer. 
Result so far: 632502.971428
The remainder is 60 after subtracting 840 from 900.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

On to step 15:
105 goes into 600 5 times with a remainder of 75.
Write down 5 as next digit of the result. 
Result so far: 632502.9714285
Subtract 525 from 600 to 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.

Moving on to step 16:
The number 105 fits into 750 7 times, leaving a remainder of 15.
The next digit of our result is 7. 
Result so far: 632502.97142857
Subtract 735 from 750 to get 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

The final result is 632502.97142857 with a remainder of 1.5e-08.