We're dividing 21545201 by 579 
Let's see how many times 579 fits into 21545201.

Step 1:
If we divide 2 by 579, we get 0 and a remainder of 2.
The number 0 becomes the next digit in our result. 
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 / 579

Going ahead to step 2:
579 goes into 21 0 times with a remainder of 21.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 21 leaves us with 21.
Append the next digit (5) from the dividend to 21 and continue with: 215 / 579

Step 3:
When dividing 215 by 579, we get 0 with a remainder of 215.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 215 after subtracting 0 from 215.
Append the next digit (4) from the dividend to 215 and continue with: 2154 / 579

Let's proceed to step 4:
579 goes into 2154 3 times with a remainder of 417.
Record the quotient 3 as the next digit in the result. 
Result so far: 3.0
Subtracting 1737 from 2154 leaves us with 417.
Fetch the next digit (5) from the dividend, attach it to 417 and continue: 4175 / 579

Advancing to step 5:
When dividing 4175 by 579, we get 7 with a remainder of 122.
The next digit of our result is 7. 
Result so far: 37.0
The remainder is 122 after subtracting 4053 from 4175.
Fetch the next digit (2) from the dividend, attach it to 122 and continue: 1222 / 579

Advancing to step 6:
The number 579 fits into 1222 2 times, leaving a remainder of 64.
The next digit of our result is 2. 
Result so far: 372.0
Deduct 1158 from 1222 and we're left with 64.
Bring next digit (0) of the dividend behind the 64 and repeat the process: 640 / 579

Step 7:
579 goes into 640 1 times with a remainder of 61.
Write down 1 as next digit of the result. 
Result so far: 3721.0
Subtracting 579 from 640 leaves us with 61.
Fetch the next digit (1) from the dividend, attach it to 61 and continue: 611 / 579

On to step 8:
579 goes into 611 1 times with a remainder of 32.
The next digit of our result is 1. 
Result so far: 37211.0
Deduct 579 from 611 and we're left with 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Advancing to step 9:
320 divided by 579 is 0 with a remainder of 320.
Record the quotient 0 as the next digit in the result. 
Result so far: 37211.0
Subtracting 0 from 320 leaves us with 320.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3200, and continue the process.

Going ahead to step 10:
3200 divided by 579 is 5 with a remainder of 305.
Record the quotient 5 as the next digit in the result. 
Result so far: 37211.05
If we subtract 2895 from 3200, we get 305.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3050, and continue the process.

Step 11:
579 can be fit into 3050 5 times, resulting in a remainder of 155.
Use 5 as the next digit of our solution. 
Result so far: 37211.055
Subtract 2895 from 3050 to get 155.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1550, and continue the process.

The final result is 37211.055 with a remainder of 0.0155.