Let's divide 21379680 by 339
We're looking to find how many times 339 goes into 21379680.

Going ahead to step 1:
When dividing 2 by 339, we get 0 with a remainder of 2.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 2 to get 2.
Fetch the next digit (1) from the dividend, attach it to 2 and continue: 21 / 339

Step 2:
21 divided by 339 is 0 with a remainder of 21.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 21 and we're left with 21.
Grab the next digit (3) from the dividend, add it to 21, then carry on: 213 / 339

Moving on to step 3:
If we divide 213 by 339, we get 0 and a remainder of 213.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 213 leaves us with 213.
Include the next digit (7) from the dividend after 213, then repeat: 2137 / 339

Moving on to step 4:
If we divide 2137 by 339, we get 6 and a remainder of 103.
Use 6 as the next digit of our solution. 
Result so far: 6.0
The remainder is 103 after subtracting 2034 from 2137.
Include the next digit (9) from the dividend after 103, then repeat: 1039 / 339

Going ahead to step 5:
339 goes into 1039 3 times with a remainder of 22.
The next digit of our result is 3. 
Result so far: 63.0
The remainder is 22 after subtracting 1017 from 1039.
Grab the next digit (6) from the dividend, add it to 22, then carry on: 226 / 339

Let's proceed to step 6:
339 can be fit into 226 0 times, resulting in a remainder of 226.
Use 0 as the next digit of our solution. 
Result so far: 630.0
Subtract 0 from 226 to get 226.
Take the next digit (8) from the dividend and append it to 226, then repeat: 2268 / 339

Step 7:
The number 339 fits into 2268 6 times, leaving a remainder of 234.
Write down 6 as next digit of the result. 
Result so far: 6306.0
If we subtract 2034 from 2268, we get 234.
Grab the next digit (0) from the dividend, add it to 234, then carry on: 2340 / 339

Advancing to step 8:
2340 divided by 339 is 6 with a remainder of 306.
Use 6 as the next digit of our solution. 
Result so far: 63066.0
If we take 2034 away from 2340, we end up with 306.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3060, and continue the process.

Step 9:
If we divide 3060 by 339, we get 9 and a remainder of 9.
Write down 9 as next digit of the result. 
Result so far: 63066.9
Deduct 3051 from 3060 and we're left with 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Going ahead to step 10:
339 can be fit into 90 0 times, resulting in a remainder of 90.
Put 0 as the next digit of the answer. 
Result so far: 63066.9
Subtracting 0 from 90 leaves us with 90.
Since there are no more digits in the dividend, we add a zero to the remainder making it 900, and continue the process.

Advancing to step 11:
If we divide 900 by 339, we get 2 and a remainder of 222.
Put 2 as the next digit of the answer. 
Result so far: 63066.902
The remainder is 222 after subtracting 678 from 900.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2220, and continue the process.

Going ahead to step 12:
The number 339 fits into 2220 6 times, leaving a remainder of 186.
The next digit of our result is 6. 
Result so far: 63066.9026
Subtracting 2034 from 2220 leaves us with 186.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1860, and continue the process.

Let's proceed to step 13:
339 goes into 1860 5 times with a remainder of 165.
Record the quotient 5 as the next digit in the result. 
Result so far: 63066.90265
The remainder is 165 after subtracting 1695 from 1860.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1650, and continue the process.

Moving on to step 14:
339 goes into 1650 4 times with a remainder of 294.
The number 4 becomes the next digit in our result. 
Result so far: 63066.902654
Deduct 1356 from 1650 and we're left with 294.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2940, and continue the process.

On to step 15:
339 goes into 2940 8 times with a remainder of 228.
Put 8 as the next digit of the answer. 
Result so far: 63066.9026548
If we subtract 2712 from 2940, we get 228.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2280, and continue the process.

Step 16:
When dividing 2280 by 339, we get 6 with a remainder of 246.
Use 6 as the next digit of our solution. 
Result so far: 63066.90265486
If we take 2034 away from 2280, we end up with 246.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2460, and continue the process.

The quotient of the division is 63066.90265486, and the remainder is 2.46e-07.