66394754 divided by 339 
We want to figure out the number of times 66394754 can be divided by 339.

On to step 1:
The number 339 fits into 6 0 times, leaving a remainder of 6.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 6 after subtracting 0 from 6.
Append the next digit (6) from the dividend to 6 and continue with: 66 / 339

Step 2:
If we divide 66 by 339, we get 0 and a remainder of 66.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 66, we end up with 66.
Include the next digit (3) from the dividend after 66, then repeat: 663 / 339

Let's proceed to step 3:
The number 339 fits into 663 1 times, leaving a remainder of 324.
The next digit of our result is 1. 
Result so far: 1.0
If we subtract 339 from 663, we get 324.
Grab the next digit (9) from the dividend, add it to 324, then carry on: 3249 / 339

On to step 4:
The number 339 fits into 3249 9 times, leaving a remainder of 198.
The number 9 becomes the next digit in our result. 
Result so far: 19.0
Subtract 3051 from 3249 to get 198.
Take the next digit (4) from the dividend and append it to 198, then repeat: 1984 / 339

Let's proceed to step 5:
339 can be fit into 1984 5 times, resulting in a remainder of 289.
The next digit of our result is 5. 
Result so far: 195.0
If we take 1695 away from 1984, we end up with 289.
Include the next digit (7) from the dividend after 289, then repeat: 2897 / 339

Advancing to step 6:
When dividing 2897 by 339, we get 8 with a remainder of 185.
Use 8 as the next digit of our solution. 
Result so far: 1958.0
Subtracting 2712 from 2897 leaves us with 185.
Fetch the next digit (5) from the dividend, attach it to 185 and continue: 1855 / 339

On to step 7:
If we divide 1855 by 339, we get 5 and a remainder of 160.
Record the quotient 5 as the next digit in the result. 
Result so far: 19585.0
Subtract 1695 from 1855 to get 160.
Append the next digit (4) from the dividend to 160 and continue with: 1604 / 339

Going ahead to step 8:
339 can be fit into 1604 4 times, resulting in a remainder of 248.
Put 4 as the next digit of the answer. 
Result so far: 195854.0
If we subtract 1356 from 1604, we get 248.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2480, and continue the process.

Going ahead to step 9:
The number 339 fits into 2480 7 times, leaving a remainder of 107.
Put 7 as the next digit of the answer. 
Result so far: 195854.7
Subtracting 2373 from 2480 leaves us with 107.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1070, and continue the process.

On to step 10:
339 goes into 1070 3 times with a remainder of 53.
Use 3 as the next digit of our solution. 
Result so far: 195854.73
Subtracting 1017 from 1070 leaves us with 53.
Since there are no more digits in the dividend, we add a zero to the remainder making it 530, and continue the process.

Advancing to step 11:
The number 339 fits into 530 1 times, leaving a remainder of 191.
Use 1 as the next digit of our solution. 
Result so far: 195854.731
Deduct 339 from 530 and we're left with 191.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1910, and continue the process.

Going ahead to step 12:
1910 divided by 339 is 5 with a remainder of 215.
Record the quotient 5 as the next digit in the result. 
Result so far: 195854.7315
If we subtract 1695 from 1910, we get 215.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2150, and continue the process.

Advancing to step 13:
The number 339 fits into 2150 6 times, leaving a remainder of 116.
Record the quotient 6 as the next digit in the result. 
Result so far: 195854.73156
Subtract 2034 from 2150 to get 116.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1160, and continue the process.

Going ahead to step 14:
The number 339 fits into 1160 3 times, leaving a remainder of 143.
The number 3 becomes the next digit in our result. 
Result so far: 195854.731563
The remainder is 143 after subtracting 1017 from 1160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1430, and continue the process.

Moving on to step 15:
The number 339 fits into 1430 4 times, leaving a remainder of 74.
The number 4 becomes the next digit in our result. 
Result so far: 195854.7315634
Deduct 1356 from 1430 and we're left with 74.
Since there are no more digits in the dividend, we add a zero to the remainder making it 740, and continue the process.

On to step 16:
If we divide 740 by 339, we get 2 and a remainder of 62.
Use 2 as the next digit of our solution. 
Result so far: 195854.73156342
If we subtract 678 from 740, we get 62.
Since there are no more digits in the dividend, we add a zero to the remainder making it 620, and continue the process.

The final outcome is 195854.73156342, with a leftover of 6.2e-08.