We look at the division of 21563390 by 348 
We want to divide 21563390 by 348.

Step 1:
348 goes into 2 0 times with a remainder of 2.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 2 leaves us with 2.
Grab the next digit (1) from the dividend, add it to 2, then carry on: 21 / 348

Step 2:
348 can be fit into 21 0 times, resulting in a remainder of 21.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 21 after subtracting 0 from 21.
Fetch the next digit (5) from the dividend, attach it to 21 and continue: 215 / 348

Going ahead to step 3:
The number 348 fits into 215 0 times, leaving 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.
Append the next digit (6) from the dividend to 215 and continue with: 2156 / 348

Step 4:
348 can be fit into 2156 6 times, resulting in a remainder of 68.
Put 6 as the next digit of the answer. 
Result so far: 6.0
If we take 2088 away from 2156, we end up with 68.
Append the next digit (3) from the dividend to 68 and continue with: 683 / 348

Moving on to step 5:
348 goes into 683 1 times with a remainder of 335.
Use 1 as the next digit of our solution. 
Result so far: 61.0
If we subtract 348 from 683, we get 335.
Bring next digit (3) of the dividend behind the 335 and repeat the process: 3353 / 348

Going ahead to step 6:
3353 divided by 348 is 9 with a remainder of 221.
The number 9 becomes the next digit in our result. 
Result so far: 619.0
The remainder is 221 after subtracting 3132 from 3353.
Fetch the next digit (9) from the dividend, attach it to 221 and continue: 2219 / 348

On to step 7:
2219 divided by 348 is 6 with a remainder of 131.
The next digit of our result is 6. 
Result so far: 6196.0
Subtract 2088 from 2219 to get 131.
Bring next digit (0) of the dividend behind the 131 and repeat the process: 1310 / 348

Going ahead to step 8:
348 can be fit into 1310 3 times, resulting in a remainder of 266.
Put 3 as the next digit of the answer. 
Result so far: 61963.0
If we subtract 1044 from 1310, we get 266.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2660, and continue the process.

Advancing to step 9:
2660 divided by 348 is 7 with a remainder of 224.
Use 7 as the next digit of our solution. 
Result so far: 61963.7
The remainder is 224 after subtracting 2436 from 2660.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2240, and continue the process.

Moving on to step 10:
If we divide 2240 by 348, we get 6 and a remainder of 152.
The next digit of our result is 6. 
Result so far: 61963.76
Deduct 2088 from 2240 and we're left with 152.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1520, and continue the process.

Advancing to step 11:
1520 divided by 348 is 4 with a remainder of 128.
The next digit of our result is 4. 
Result so far: 61963.764
Subtract 1392 from 1520 to 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.

Advancing to step 12:
348 can be fit into 1280 3 times, resulting in a remainder of 236.
Use 3 as the next digit of our solution. 
Result so far: 61963.7643
Deduct 1044 from 1280 and we're left with 236.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2360, and continue the process.

On to step 13:
When dividing 2360 by 348, we get 6 with a remainder of 272.
Record the quotient 6 as the next digit in the result. 
Result so far: 61963.76436
If we take 2088 away from 2360, we end up with 272.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2720, and continue the process.

Advancing to step 14:
If we divide 2720 by 348, we get 7 and a remainder of 284.
The next digit of our result is 7. 
Result so far: 61963.764367
The remainder is 284 after subtracting 2436 from 2720.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2840, and continue the process.

Moving on to step 15:
When dividing 2840 by 348, we get 8 with a remainder of 56.
Write down 8 as next digit of the result. 
Result so far: 61963.7643678
Deduct 2784 from 2840 and we're left with 56.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

Advancing to step 16:
560 divided by 348 is 1 with a remainder of 212.
Write down 1 as next digit of the result. 
Result so far: 61963.76436781
Deduct 348 from 560 and we're left with 212.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2120, and continue the process.

The final outcome is 61963.76436781, with a leftover of 2.12e-07.