55594 divided by 21 
Let's see how many times 21 fits into 55594.

Step 1:
The number 21 fits into 5 0 times, leaving a remainder of 5.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 5 after subtracting 0 from 5.
Append the next digit (5) from the dividend to 5 and continue with: 55 / 21

Let's proceed to step 2:
The number 21 fits into 55 2 times, leaving a remainder of 13.
Write down 2 as next digit of the result. 
Result so far: 2.0
If we subtract 42 from 55, we get 13.
Append the next digit (5) from the dividend to 13 and continue with: 135 / 21

Step 3:
The number 21 fits into 135 6 times, leaving a remainder of 9.
Write down 6 as next digit of the result. 
Result so far: 26.0
The remainder is 9 after subtracting 126 from 135.
Append the next digit (9) from the dividend to 9 and continue with: 99 / 21

Let's proceed to step 4:
21 can be fit into 99 4 times, resulting in a remainder of 15.
Write down 4 as next digit of the result. 
Result so far: 264.0
If we subtract 84 from 99, we get 15.
Include the next digit (4) from the dividend after 15, then repeat: 154 / 21

Going ahead to step 5:
21 can be fit into 154 7 times, resulting in a remainder of 7.
Write down 7 as next digit of the result. 
Result so far: 2647.0
If we take 147 away from 154, we end up with 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Going ahead to step 6:
The number 21 fits into 70 3 times, leaving a remainder of 7.
The number 3 becomes the next digit in our result. 
Result so far: 2647.3
Subtract 63 from 70 to get 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Advancing to step 7:
70 divided by 21 is 3 with a remainder of 7.
Use 3 as the next digit of our solution. 
Result so far: 2647.33
Subtract 63 from 70 to get 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

After the division, we end up with 2647.33 and a remainder of 0.007.