36593009 ÷ 721 
The aim is to understand the frequency of 721 in 36593009.

On to step 1:
If we divide 3 by 721, we get 0 and a remainder of 3.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 3 leaves us with 3.
Append the next digit (6) from the dividend to 3 and continue with: 36 / 721

On to step 2:
When dividing 36 by 721, we get 0 with a remainder of 36.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 36 to get 36.
Take the next digit (5) from the dividend and append it to 36, then repeat: 365 / 721

Moving on to step 3:
721 goes into 365 0 times with a remainder of 365.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 365 after subtracting 0 from 365.
Grab the next digit (9) from the dividend, add it to 365, then carry on: 3659 / 721

Step 4:
721 goes into 3659 5 times with a remainder of 54.
Use 5 as the next digit of our solution. 
Result so far: 5.0
The remainder is 54 after subtracting 3605 from 3659.
Append the next digit (3) from the dividend to 54 and continue with: 543 / 721

Advancing to step 5:
When dividing 543 by 721, we get 0 with a remainder of 543.
Write down 0 as next digit of the result. 
Result so far: 50.0
Subtract 0 from 543 to get 543.
Fetch the next digit (0) from the dividend, attach it to 543 and continue: 5430 / 721

Moving on to step 6:
721 goes into 5430 7 times with a remainder of 383.
The number 7 becomes the next digit in our result. 
Result so far: 507.0
Deduct 5047 from 5430 and we're left with 383.
Fetch the next digit (0) from the dividend, attach it to 383 and continue: 3830 / 721

Let's proceed to step 7:
When dividing 3830 by 721, we get 5 with a remainder of 225.
Record the quotient 5 as the next digit in the result. 
Result so far: 5075.0
If we take 3605 away from 3830, we end up with 225.
Fetch the next digit (9) from the dividend, attach it to 225 and continue: 2259 / 721

Going ahead to step 8:
721 can be fit into 2259 3 times, resulting in a remainder of 96.
Record the quotient 3 as the next digit in the result. 
Result so far: 50753.0
If we subtract 2163 from 2259, we get 96.
Since there are no more digits in the dividend, we add a zero to the remainder making it 960, and continue the process.

Moving on to step 9:
If we divide 960 by 721, we get 1 and a remainder of 239.
Record the quotient 1 as the next digit in the result. 
Result so far: 50753.1
Deduct 721 from 960 and we're left with 239.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2390, and continue the process.

Step 10:
The number 721 fits into 2390 3 times, leaving a remainder of 227.
Write down 3 as next digit of the result. 
Result so far: 50753.13
Subtracting 2163 from 2390 leaves us with 227.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2270, and continue the process.

Going ahead to step 11:
721 can be fit into 2270 3 times, resulting in a remainder of 107.
Write down 3 as next digit of the result. 
Result so far: 50753.133
Subtract 2163 from 2270 to get 107.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1070, and continue the process.

The final result is 50753.133 with a remainder of 0.0107.