66612339 ÷ 344 
We're looking to find how many times 344 goes into 66612339.

On to step 1:
6 divided by 344 is 0 with a remainder of 6.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 6 leaves us with 6.
Append the next digit (6) from the dividend to 6 and continue with: 66 / 344

Step 2:
344 can be fit into 66 0 times, resulting in a remainder of 66.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 66 leaves us with 66.
Fetch the next digit (6) from the dividend, attach it to 66 and continue: 666 / 344

On to step 3:
The number 344 fits into 666 1 times, leaving a remainder of 322.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Deduct 344 from 666 and we're left with 322.
Append the next digit (1) from the dividend to 322 and continue with: 3221 / 344

On to step 4:
When dividing 3221 by 344, we get 9 with a remainder of 125.
The next digit of our result is 9. 
Result so far: 19.0
Subtract 3096 from 3221 to get 125.
Bring next digit (2) of the dividend behind the 125 and repeat the process: 1252 / 344

Going ahead to step 5:
344 goes into 1252 3 times with a remainder of 220.
Record the quotient 3 as the next digit in the result. 
Result so far: 193.0
Subtracting 1032 from 1252 leaves us with 220.
Include the next digit (3) from the dividend after 220, then repeat: 2203 / 344

Step 6:
2203 divided by 344 is 6 with a remainder of 139.
Put 6 as the next digit of the answer. 
Result so far: 1936.0
The remainder is 139 after subtracting 2064 from 2203.
Append the next digit (3) from the dividend to 139 and continue with: 1393 / 344

Moving on to step 7:
The number 344 fits into 1393 4 times, leaving a remainder of 17.
Record the quotient 4 as the next digit in the result. 
Result so far: 19364.0
Subtracting 1376 from 1393 leaves us with 17.
Take the next digit (9) from the dividend and append it to 17, then repeat: 179 / 344

Moving on to step 8:
The number 344 fits into 179 0 times, leaving a remainder of 179.
Write down 0 as next digit of the result. 
Result so far: 193640.0
The remainder is 179 after subtracting 0 from 179.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1790, and continue the process.

Going ahead to step 9:
The number 344 fits into 1790 5 times, leaving a remainder of 70.
Put 5 as the next digit of the answer. 
Result so far: 193640.5
If we subtract 1720 from 1790, we get 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

On to step 10:
If we divide 700 by 344, we get 2 and a remainder of 12.
The number 2 becomes the next digit in our result. 
Result so far: 193640.52
If we subtract 688 from 700, we get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

On to step 11:
344 can be fit into 120 0 times, resulting in a remainder of 120.
Write down 0 as next digit of the result. 
Result so far: 193640.52
Subtracting 0 from 120 leaves us with 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1200, and continue the process.

Moving on to step 12:
1200 divided by 344 is 3 with a remainder of 168.
Put 3 as the next digit of the answer. 
Result so far: 193640.5203
If we take 1032 away from 1200, we end up with 168.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1680, and continue the process.

On to step 13:
When dividing 1680 by 344, we get 4 with a remainder of 304.
Put 4 as the next digit of the answer. 
Result so far: 193640.52034
If we subtract 1376 from 1680, we get 304.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3040, and continue the process.

Advancing to step 14:
The number 344 fits into 3040 8 times, leaving a remainder of 288.
Put 8 as the next digit of the answer. 
Result so far: 193640.520348
If we take 2752 away from 3040, we end up with 288.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2880, and continue the process.

Moving on to step 15:
344 can be fit into 2880 8 times, resulting in a remainder of 128.
The number 8 becomes the next digit in our result. 
Result so far: 193640.5203488
Subtracting 2752 from 2880 leaves us with 128.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1280, and continue the process.

After the division, we end up with 193640.5203488 and a remainder of 1.28e-06.