Let's divide 21232410 by 406
Let's see how many times 406 fits into 21232410.

On to step 1:
406 can be fit into 2 0 times, resulting in a remainder of 2.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 2, we get 2.
Fetch the next digit (1) from the dividend, attach it to 2 and continue: 21 / 406

Let's proceed to step 2:
406 goes into 21 0 times with a remainder of 21.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 21 after subtracting 0 from 21.
Append the next digit (2) from the dividend to 21 and continue with: 212 / 406

Going ahead to step 3:
212 divided by 406 is 0 with a remainder of 212.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 212, we get 212.
Fetch the next digit (3) from the dividend, attach it to 212 and continue: 2123 / 406

Step 4:
If we divide 2123 by 406, we get 5 and a remainder of 93.
Use 5 as the next digit of our solution. 
Result so far: 5.0
Deduct 2030 from 2123 and we're left with 93.
Take the next digit (2) from the dividend and append it to 93, then repeat: 932 / 406

Going ahead to step 5:
When dividing 932 by 406, we get 2 with a remainder of 120.
The next digit of our result is 2. 
Result so far: 52.0
If we take 812 away from 932, we end up with 120.
Grab the next digit (4) from the dividend, add it to 120, then carry on: 1204 / 406

Let's proceed to step 6:
406 goes into 1204 2 times with a remainder of 392.
Write down 2 as next digit of the result. 
Result so far: 522.0
Deduct 812 from 1204 and we're left with 392.
Take the next digit (1) from the dividend and append it to 392, then repeat: 3921 / 406

Advancing to step 7:
3921 divided by 406 is 9 with a remainder of 267.
The next digit of our result is 9. 
Result so far: 5229.0
If we take 3654 away from 3921, we end up with 267.
Grab the next digit (0) from the dividend, add it to 267, then carry on: 2670 / 406

Step 8:
406 can be fit into 2670 6 times, resulting in a remainder of 234.
Put 6 as the next digit of the answer. 
Result so far: 52296.0
If we take 2436 away from 2670, we end up with 234.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2340, and continue the process.

Advancing to step 9:
406 can be fit into 2340 5 times, resulting in a remainder of 310.
Use 5 as the next digit of our solution. 
Result so far: 52296.5
Subtract 2030 from 2340 to get 310.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3100, and continue the process.

On to step 10:
If we divide 3100 by 406, we get 7 and a remainder of 258.
Put 7 as the next digit of the answer. 
Result so far: 52296.57
Subtract 2842 from 3100 to 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.

Moving on to step 11:
When dividing 2580 by 406, we get 6 with a remainder of 144.
Record the quotient 6 as the next digit in the result. 
Result so far: 52296.576
Deduct 2436 from 2580 and we're left with 144.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1440, and continue the process.

Advancing to step 12:
The number 406 fits into 1440 3 times, leaving a remainder of 222.
Put 3 as the next digit of the answer. 
Result so far: 52296.5763
The remainder is 222 after subtracting 1218 from 1440.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2220, and continue the process.

Moving on to step 13:
The number 406 fits into 2220 5 times, leaving a remainder of 190.
Use 5 as the next digit of our solution. 
Result so far: 52296.57635
The remainder is 190 after subtracting 2030 from 2220.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1900, and continue the process.

Going ahead to step 14:
1900 divided by 406 is 4 with a remainder of 276.
The next digit of our result is 4. 
Result so far: 52296.576354
Subtracting 1624 from 1900 leaves us with 276.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2760, and continue the process.

Advancing to step 15:
When dividing 2760 by 406, we get 6 with a remainder of 324.
The next digit of our result is 6. 
Result so far: 52296.5763546
The remainder is 324 after subtracting 2436 from 2760.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3240, and continue the process.

Let's proceed to step 16:
The number 406 fits into 3240 7 times, leaving a remainder of 398.
Write down 7 as next digit of the result. 
Result so far: 52296.57635467
Deduct 2842 from 3240 and we're left with 398.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3980, and continue the process.

After the division, we end up with 52296.57635467 and a remainder of 3.98e-07.