21102440 ÷ 548 
We want to figure out the number of times 21102440 can be divided by 548.

Advancing to step 1:
548 can be fit into 2 0 times, resulting in a remainder of 2.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 2 after subtracting 0 from 2.
Include the next digit (1) from the dividend after 2, then repeat: 21 / 548

Step 2:
If we divide 21 by 548, we get 0 and a remainder of 21.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 21 to get 21.
Bring next digit (1) of the dividend behind the 21 and repeat the process: 211 / 548

Step 3:
The number 548 fits into 211 0 times, leaving a remainder of 211.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 211 after subtracting 0 from 211.
Append the next digit (0) from the dividend to 211 and continue with: 2110 / 548

Going ahead to step 4:
2110 divided by 548 is 3 with a remainder of 466.
Put 3 as the next digit of the answer. 
Result so far: 3.0
The remainder is 466 after subtracting 1644 from 2110.
Bring next digit (2) of the dividend behind the 466 and repeat the process: 4662 / 548

Let's proceed to step 5:
If we divide 4662 by 548, we get 8 and a remainder of 278.
Put 8 as the next digit of the answer. 
Result so far: 38.0
Subtract 4384 from 4662 to get 278.
Fetch the next digit (4) from the dividend, attach it to 278 and continue: 2784 / 548

Moving on to step 6:
2784 divided by 548 is 5 with a remainder of 44.
Write down 5 as next digit of the result. 
Result so far: 385.0
The remainder is 44 after subtracting 2740 from 2784.
Grab the next digit (4) from the dividend, add it to 44, then carry on: 444 / 548

Advancing to step 7:
When dividing 444 by 548, we get 0 with a remainder of 444.
The number 0 becomes the next digit in our result. 
Result so far: 3850.0
The remainder is 444 after subtracting 0 from 444.
Grab the next digit (0) from the dividend, add it to 444, then carry on: 4440 / 548

Moving on to step 8:
548 goes into 4440 8 times with a remainder of 56.
Write down 8 as next digit of the result. 
Result so far: 38508.0
If we subtract 4384 from 4440, we get 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 9:
When dividing 560 by 548, we get 1 with a remainder of 12.
Write down 1 as next digit of the result. 
Result so far: 38508.1
Deduct 548 from 560 and we're left with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

On to step 10:
548 goes into 120 0 times with a remainder of 120.
Record the quotient 0 as the next digit in the result. 
Result so far: 38508.1
Subtract 0 from 120 to get 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1200, and continue the process.

Advancing to step 11:
The number 548 fits into 1200 2 times, leaving a remainder of 104.
Write down 2 as next digit of the result. 
Result so far: 38508.102
If we take 1096 away from 1200, we end up with 104.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1040, and continue the process.

On to step 12:
548 goes into 1040 1 times with a remainder of 492.
The number 1 becomes the next digit in our result. 
Result so far: 38508.1021
If we subtract 548 from 1040, we get 492.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4920, and continue the process.

Advancing to step 13:
548 goes into 4920 8 times with a remainder of 536.
Put 8 as the next digit of the answer. 
Result so far: 38508.10218
Deduct 4384 from 4920 and we're left with 536.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5360, and continue the process.

Advancing to step 14:
The number 548 fits into 5360 9 times, leaving a remainder of 428.
Put 9 as the next digit of the answer. 
Result so far: 38508.102189
Subtracting 4932 from 5360 leaves us with 428.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4280, and continue the process.

Advancing to step 15:
4280 divided by 548 is 7 with a remainder of 444.
Put 7 as the next digit of the answer. 
Result so far: 38508.1021897
Subtract 3836 from 4280 to get 444.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4440, and continue the process.

Advancing to step 16:
If we divide 4440 by 548, we get 8 and a remainder of 56.
The next digit of our result is 8. 
Result so far: 38508.10218978
The remainder is 56 after subtracting 4384 from 4440.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

The final outcome is 38508.10218978, with a leftover of 5.6e-08.