66915904 ÷ 174 
We want to figure out the number of times 66915904 can be divided by 174.

Step 1:
6 divided by 174 is 0 with a remainder of 6.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 6 to get 6.
Grab the next digit (6) from the dividend, add it to 6, then carry on: 66 / 174

Going ahead to step 2:
174 goes into 66 0 times with a remainder of 66.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 66 and we're left with 66.
Fetch the next digit (9) from the dividend, attach it to 66 and continue: 669 / 174

Advancing to step 3:
When dividing 669 by 174, we get 3 with a remainder of 147.
Record the quotient 3 as the next digit in the result. 
Result so far: 3.0
The remainder is 147 after subtracting 522 from 669.
Take the next digit (1) from the dividend and append it to 147, then repeat: 1471 / 174

Step 4:
1471 divided by 174 is 8 with a remainder of 79.
Record the quotient 8 as the next digit in the result. 
Result so far: 38.0
Subtract 1392 from 1471 to get 79.
Append the next digit (5) from the dividend to 79 and continue with: 795 / 174

Moving on to step 5:
The number 174 fits into 795 4 times, leaving a remainder of 99.
The number 4 becomes the next digit in our result. 
Result so far: 384.0
The remainder is 99 after subtracting 696 from 795.
Grab the next digit (9) from the dividend, add it to 99, then carry on: 999 / 174

Moving on to step 6:
When dividing 999 by 174, we get 5 with a remainder of 129.
The next digit of our result is 5. 
Result so far: 3845.0
The remainder is 129 after subtracting 870 from 999.
Include the next digit (0) from the dividend after 129, then repeat: 1290 / 174

Let's proceed to step 7:
174 can be fit into 1290 7 times, resulting in a remainder of 72.
Record the quotient 7 as the next digit in the result. 
Result so far: 38457.0
If we take 1218 away from 1290, we end up with 72.
Grab the next digit (4) from the dividend, add it to 72, then carry on: 724 / 174

Step 8:
724 divided by 174 is 4 with a remainder of 28.
Put 4 as the next digit of the answer. 
Result so far: 384574.0
The remainder is 28 after subtracting 696 from 724.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Let's proceed to step 9:
If we divide 280 by 174, we get 1 and a remainder of 106.
The number 1 becomes the next digit in our result. 
Result so far: 384574.1
Subtracting 174 from 280 leaves us with 106.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1060, and continue the process.

Moving on to step 10:
If we divide 1060 by 174, we get 6 and a remainder of 16.
Put 6 as the next digit of the answer. 
Result so far: 384574.16
Subtracting 1044 from 1060 leaves us with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Moving on to step 11:
160 divided by 174 is 0 with a remainder of 160.
Record the quotient 0 as the next digit in the result. 
Result so far: 384574.16
Subtracting 0 from 160 leaves us with 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1600, and continue the process.

Let's proceed to step 12:
If we divide 1600 by 174, we get 9 and a remainder of 34.
The next digit of our result is 9. 
Result so far: 384574.1609
Subtracting 1566 from 1600 leaves us with 34.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

Advancing to step 13:
174 goes into 340 1 times with a remainder of 166.
The next digit of our result is 1. 
Result so far: 384574.16091
Subtracting 174 from 340 leaves us with 166.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1660, and continue the process.

Advancing to step 14:
174 goes into 1660 9 times with a remainder of 94.
Write down 9 as next digit of the result. 
Result so far: 384574.160919
Deduct 1566 from 1660 and we're left with 94.
Since there are no more digits in the dividend, we add a zero to the remainder making it 940, and continue the process.

Step 15:
940 divided by 174 is 5 with a remainder of 70.
Use 5 as the next digit of our solution. 
Result so far: 384574.1609195
The remainder is 70 after subtracting 870 from 940.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

Moving on to step 16:
The number 174 fits into 700 4 times, leaving a remainder of 4.
Put 4 as the next digit of the answer. 
Result so far: 384574.16091954
If we subtract 696 from 700, we get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Our division results in 384574.16091954 with a remaining 4e-09.