21216708 divided by 352 
We're looking to find how many times 352 goes into 21216708.

Advancing to step 1:
2 divided by 352 is 0 with a remainder of 2.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 2 and we're left with 2.
Fetch the next digit (1) from the dividend, attach it to 2 and continue: 21 / 352

Advancing to step 2:
21 divided by 352 is 0 with a remainder of 21.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 21, we get 21.
Fetch the next digit (2) from the dividend, attach it to 21 and continue: 212 / 352

On to step 3:
352 can be fit into 212 0 times, resulting in a remainder of 212.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 212 leaves us with 212.
Take the next digit (1) from the dividend and append it to 212, then repeat: 2121 / 352

Step 4:
352 can be fit into 2121 6 times, resulting in a remainder of 9.
The next digit of our result is 6. 
Result so far: 6.0
Deduct 2112 from 2121 and we're left with 9.
Append the next digit (6) from the dividend to 9 and continue with: 96 / 352

Going ahead to step 5:
96 divided by 352 is 0 with a remainder of 96.
Use 0 as the next digit of our solution. 
Result so far: 60.0
If we subtract 0 from 96, we get 96.
Append the next digit (7) from the dividend to 96 and continue with: 967 / 352

On to step 6:
The number 352 fits into 967 2 times, leaving a remainder of 263.
Write down 2 as next digit of the result. 
Result so far: 602.0
Subtract 704 from 967 to get 263.
Append the next digit (0) from the dividend to 263 and continue with: 2630 / 352

Step 7:
The number 352 fits into 2630 7 times, leaving a remainder of 166.
Write down 7 as next digit of the result. 
Result so far: 6027.0
If we subtract 2464 from 2630, we get 166.
Bring next digit (8) of the dividend behind the 166 and repeat the process: 1668 / 352

Advancing to step 8:
When dividing 1668 by 352, we get 4 with a remainder of 260.
Use 4 as the next digit of our solution. 
Result so far: 60274.0
The remainder is 260 after subtracting 1408 from 1668.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2600, and continue the process.

Let's proceed to step 9:
352 can be fit into 2600 7 times, resulting in a remainder of 136.
Write down 7 as next digit of the result. 
Result so far: 60274.7
Subtract 2464 from 2600 to get 136.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1360, and continue the process.

Step 10:
The number 352 fits into 1360 3 times, leaving a remainder of 304.
Use 3 as the next digit of our solution. 
Result so far: 60274.73
The remainder is 304 after subtracting 1056 from 1360.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3040, and continue the process.

Step 11:
When dividing 3040 by 352, we get 8 with a remainder of 224.
The number 8 becomes the next digit in our result. 
Result so far: 60274.738
Subtracting 2816 from 3040 leaves us with 224.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2240, and continue the process.

Advancing to step 12:
352 goes into 2240 6 times with a remainder of 128.
Put 6 as the next digit of the answer. 
Result so far: 60274.7386
If we take 2112 away from 2240, we end up 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.

Going ahead to step 13:
When dividing 1280 by 352, we get 3 with a remainder of 224.
Put 3 as the next digit of the answer. 
Result so far: 60274.73863
The remainder is 224 after subtracting 1056 from 1280.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2240, and continue the process.

Going ahead to step 14:
If we divide 2240 by 352, we get 6 and a remainder of 128.
Write down 6 as next digit of the result. 
Result so far: 60274.738636
If we take 2112 away from 2240, we end up 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.

Going ahead to step 15:
If we divide 1280 by 352, we get 3 and a remainder of 224.
Put 3 as the next digit of the answer. 
Result so far: 60274.7386363
The remainder is 224 after subtracting 1056 from 1280.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2240, and continue the process.

Advancing to step 16:
352 can be fit into 2240 6 times, resulting in a remainder of 128.
Record the quotient 6 as the next digit in the result. 
Result so far: 60274.73863636
If we subtract 2112 from 2240, we get 128.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1280, and continue the process.

The final outcome is 60274.73863636, with a leftover of 1.28e-07.