We're dividing 21206786 by 596 
The aim is to understand the frequency of 596 in 21206786.

Moving on to step 1:
2 divided by 596 is 0 with a remainder of 2.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 2 and we're left with 2.
Fetch the next digit (1) from the dividend, attach it to 2 and continue: 21 / 596

Let's proceed to step 2:
The number 596 fits into 21 0 times, leaving a remainder of 21.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 21, we get 21.
Fetch the next digit (2) from the dividend, attach it to 21 and continue: 212 / 596

Let's proceed to step 3:
596 goes into 212 0 times with a remainder of 212.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 212 and we're left with 212.
Take the next digit (0) from the dividend and append it to 212, then repeat: 2120 / 596

Going ahead to step 4:
2120 divided by 596 is 3 with a remainder of 332.
The number 3 becomes the next digit in our result. 
Result so far: 3.0
If we subtract 1788 from 2120, we get 332.
Take the next digit (6) from the dividend and append it to 332, then repeat: 3326 / 596

Step 5:
The number 596 fits into 3326 5 times, leaving a remainder of 346.
Put 5 as the next digit of the answer. 
Result so far: 35.0
The remainder is 346 after subtracting 2980 from 3326.
Append the next digit (7) from the dividend to 346 and continue with: 3467 / 596

Step 6:
596 can be fit into 3467 5 times, resulting in a remainder of 487.
Record the quotient 5 as the next digit in the result. 
Result so far: 355.0
Subtract 2980 from 3467 to get 487.
Include the next digit (8) from the dividend after 487, then repeat: 4878 / 596

Step 7:
4878 divided by 596 is 8 with a remainder of 110.
Put 8 as the next digit of the answer. 
Result so far: 3558.0
If we take 4768 away from 4878, we end up with 110.
Include the next digit (6) from the dividend after 110, then repeat: 1106 / 596

Let's proceed to step 8:
596 goes into 1106 1 times with a remainder of 510.
Write down 1 as next digit of the result. 
Result so far: 35581.0
If we subtract 596 from 1106, we get 510.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5100, and continue the process.

Advancing to step 9:
The number 596 fits into 5100 8 times, leaving a remainder of 332.
Put 8 as the next digit of the answer. 
Result so far: 35581.8
Subtract 4768 from 5100 to get 332.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3320, and continue the process.

Step 10:
If we divide 3320 by 596, we get 5 and a remainder of 340.
Write down 5 as next digit of the result. 
Result so far: 35581.85
If we take 2980 away from 3320, we end up with 340.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3400, and continue the process.

Going ahead to step 11:
The number 596 fits into 3400 5 times, leaving a remainder of 420.
The next digit of our result is 5. 
Result so far: 35581.855
If we subtract 2980 from 3400, we get 420.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4200, and continue the process.

Our division results in 35581.855 with a remaining 0.042.