We're dividing 66173873 by 505 
We're looking to find how many times 505 goes into 66173873.

Let's proceed to step 1:
The number 505 fits into 6 0 times, leaving a remainder of 6.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 6 and we're left with 6.
Fetch the next digit (6) from the dividend, attach it to 6 and continue: 66 / 505

Advancing to step 2:
505 can be fit into 66 0 times, resulting in a remainder of 66.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 66, we get 66.
Fetch the next digit (1) from the dividend, attach it to 66 and continue: 661 / 505

On to step 3:
505 can be fit into 661 1 times, resulting in a remainder of 156.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
If we take 505 away from 661, we end up with 156.
Append the next digit (7) from the dividend to 156 and continue with: 1567 / 505

Moving on to step 4:
505 goes into 1567 3 times with a remainder of 52.
Use 3 as the next digit of our solution. 
Result so far: 13.0
Subtracting 1515 from 1567 leaves us with 52.
Fetch the next digit (3) from the dividend, attach it to 52 and continue: 523 / 505

Advancing to step 5:
505 can be fit into 523 1 times, resulting in a remainder of 18.
The number 1 becomes the next digit in our result. 
Result so far: 131.0
If we take 505 away from 523, we end up with 18.
Take the next digit (8) from the dividend and append it to 18, then repeat: 188 / 505

Moving on to step 6:
If we divide 188 by 505, we get 0 and a remainder of 188.
Record the quotient 0 as the next digit in the result. 
Result so far: 1310.0
If we take 0 away from 188, we end up with 188.
Include the next digit (7) from the dividend after 188, then repeat: 1887 / 505

Let's proceed to step 7:
505 can be fit into 1887 3 times, resulting in a remainder of 372.
Record the quotient 3 as the next digit in the result. 
Result so far: 13103.0
The remainder is 372 after subtracting 1515 from 1887.
Grab the next digit (3) from the dividend, add it to 372, then carry on: 3723 / 505

Let's proceed to step 8:
505 goes into 3723 7 times with a remainder of 188.
Put 7 as the next digit of the answer. 
Result so far: 131037.0
The remainder is 188 after subtracting 3535 from 3723.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1880, and continue the process.

Step 9:
505 goes into 1880 3 times with a remainder of 365.
The number 3 becomes the next digit in our result. 
Result so far: 131037.3
If we take 1515 away from 1880, we end up with 365.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3650, and continue the process.

Step 10:
If we divide 3650 by 505, we get 7 and a remainder of 115.
Write down 7 as next digit of the result. 
Result so far: 131037.37
The remainder is 115 after subtracting 3535 from 3650.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1150, and continue the process.

Going ahead to step 11:
When dividing 1150 by 505, we get 2 with a remainder of 140.
The number 2 becomes the next digit in our result. 
Result so far: 131037.372
The remainder is 140 after subtracting 1010 from 1150.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1400, and continue the process.

Moving on to step 12:
When dividing 1400 by 505, we get 2 with a remainder of 390.
Put 2 as the next digit of the answer. 
Result so far: 131037.3722
If we subtract 1010 from 1400, we 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.

The final result is 131037.3722 with a remainder of 0.0039.