We look at the division of 21606562 by 402 
Let's see how many times 402 fits into 21606562.

Let's proceed to step 1:
2 divided by 402 is 0 with a remainder of 2.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 2 to get 2.
Include the next digit (1) from the dividend after 2, then repeat: 21 / 402

Step 2:
The number 402 fits into 21 0 times, leaving a remainder of 21.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 21 after subtracting 0 from 21.
Include the next digit (6) from the dividend after 21, then repeat: 216 / 402

Going ahead to step 3:
If we divide 216 by 402, we get 0 and a remainder of 216.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 216 and we're left with 216.
Fetch the next digit (0) from the dividend, attach it to 216 and continue: 2160 / 402

Moving on to step 4:
2160 divided by 402 is 5 with a remainder of 150.
Write down 5 as next digit of the result. 
Result so far: 5.0
Subtract 2010 from 2160 to get 150.
Append the next digit (6) from the dividend to 150 and continue with: 1506 / 402

Step 5:
If we divide 1506 by 402, we get 3 and a remainder of 300.
The next digit of our result is 3. 
Result so far: 53.0
The remainder is 300 after subtracting 1206 from 1506.
Bring next digit (5) of the dividend behind the 300 and repeat the process: 3005 / 402

On to step 6:
3005 divided by 402 is 7 with a remainder of 191.
Record the quotient 7 as the next digit in the result. 
Result so far: 537.0
Subtracting 2814 from 3005 leaves us with 191.
Append the next digit (6) from the dividend to 191 and continue with: 1916 / 402

Step 7:
If we divide 1916 by 402, we get 4 and a remainder of 308.
The next digit of our result is 4. 
Result so far: 5374.0
If we take 1608 away from 1916, we end up with 308.
Append the next digit (2) from the dividend to 308 and continue with: 3082 / 402

Step 8:
If we divide 3082 by 402, we get 7 and a remainder of 268.
The number 7 becomes the next digit in our result. 
Result so far: 53747.0
If we subtract 2814 from 3082, we get 268.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2680, and continue the process.

Advancing to step 9:
The number 402 fits into 2680 6 times, leaving a remainder of 268.
Write down 6 as next digit of the result. 
Result so far: 53747.6
Deduct 2412 from 2680 and we're left with 268.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2680, and continue the process.

Let's proceed to step 10:
2680 divided by 402 is 6 with a remainder of 268.
Use 6 as the next digit of our solution. 
Result so far: 53747.66
Deduct 2412 from 2680 and we're left with 268.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2680, and continue the process.

In conclusion, the division gives 53747.66 with a balance of 0.268.