We look at the division of 21511494 by 343 
We want to figure out the number of times 21511494 can be divided by 343.

On to step 1:
343 can be fit into 2 0 times, resulting in a remainder of 2.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 2, we get 2.
Bring next digit (1) of the dividend behind the 2 and repeat the process: 21 / 343

Advancing to step 2:
21 divided by 343 is 0 with a remainder of 21.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 21 to get 21.
Grab the next digit (5) from the dividend, add it to 21, then carry on: 215 / 343

Advancing to step 3:
343 can be fit into 215 0 times, resulting in a remainder of 215.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 215, we end up with 215.
Grab the next digit (1) from the dividend, add it to 215, then carry on: 2151 / 343

On to step 4:
If we divide 2151 by 343, we get 6 and a remainder of 93.
Use 6 as the next digit of our solution. 
Result so far: 6.0
Deduct 2058 from 2151 and we're left with 93.
Include the next digit (1) from the dividend after 93, then repeat: 931 / 343

On to step 5:
When dividing 931 by 343, we get 2 with a remainder of 245.
Put 2 as the next digit of the answer. 
Result so far: 62.0
Subtract 686 from 931 to get 245.
Append the next digit (4) from the dividend to 245 and continue with: 2454 / 343

Going ahead to step 6:
The number 343 fits into 2454 7 times, leaving a remainder of 53.
Put 7 as the next digit of the answer. 
Result so far: 627.0
If we subtract 2401 from 2454, we get 53.
Fetch the next digit (9) from the dividend, attach it to 53 and continue: 539 / 343

Moving on to step 7:
539 divided by 343 is 1 with a remainder of 196.
Put 1 as the next digit of the answer. 
Result so far: 6271.0
The remainder is 196 after subtracting 343 from 539.
Include the next digit (4) from the dividend after 196, then repeat: 1964 / 343

On to step 8:
When dividing 1964 by 343, we get 5 with a remainder of 249.
The number 5 becomes the next digit in our result. 
Result so far: 62715.0
If we subtract 1715 from 1964, we get 249.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2490, and continue the process.

Going ahead to step 9:
2490 divided by 343 is 7 with a remainder of 89.
Write down 7 as next digit of the result. 
Result so far: 62715.7
If we take 2401 away from 2490, we end up with 89.
Since there are no more digits in the dividend, we add a zero to the remainder making it 890, and continue the process.

Step 10:
343 can be fit into 890 2 times, resulting in a remainder of 204.
Record the quotient 2 as the next digit in the result. 
Result so far: 62715.72
If we take 686 away from 890, we end up with 204.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2040, and continue the process.

Step 11:
The number 343 fits into 2040 5 times, leaving a remainder of 325.
The next digit of our result is 5. 
Result so far: 62715.725
Deduct 1715 from 2040 and we're left with 325.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3250, and continue the process.

Advancing to step 12:
When dividing 3250 by 343, we get 9 with a remainder of 163.
The number 9 becomes the next digit in our result. 
Result so far: 62715.7259
Subtracting 3087 from 3250 leaves us with 163.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1630, and continue the process.

Let's proceed to step 13:
When dividing 1630 by 343, we get 4 with a remainder of 258.
Use 4 as the next digit of our solution. 
Result so far: 62715.72594
If we subtract 1372 from 1630, we get 258.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2580, and continue the process.

Going ahead to step 14:
343 can be fit into 2580 7 times, resulting in a remainder of 179.
Use 7 as the next digit of our solution. 
Result so far: 62715.725947
Subtracting 2401 from 2580 leaves us with 179.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1790, and continue the process.

On to step 15:
The number 343 fits into 1790 5 times, leaving a remainder of 75.
The number 5 becomes the next digit in our result. 
Result so far: 62715.7259475
If we take 1715 away from 1790, we end up with 75.
Since there are no more digits in the dividend, we add a zero to the remainder making it 750, and continue the process.

Advancing to step 16:
343 can be fit into 750 2 times, resulting in a remainder of 64.
Use 2 as the next digit of our solution. 
Result so far: 62715.72594752
Deduct 686 from 750 and we're left with 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

After the division, we end up with 62715.72594752 and a remainder of 6.4e-08.