We divide 20790645 by 407
The aim is to understand the frequency of 407 in 20790645.

Going ahead to step 1:
The number 407 fits into 2 0 times, leaving a remainder of 2.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 2 leaves us with 2.
Grab the next digit (0) from the dividend, add it to 2, then carry on: 20 / 407

Step 2:
407 goes into 20 0 times with a remainder of 20.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 20, we end up with 20.
Grab the next digit (7) from the dividend, add it to 20, then carry on: 207 / 407

Going ahead to step 3:
407 can be fit into 207 0 times, resulting in a remainder of 207.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 207, we get 207.
Grab the next digit (9) from the dividend, add it to 207, then carry on: 2079 / 407

Step 4:
When dividing 2079 by 407, we get 5 with a remainder of 44.
Record the quotient 5 as the next digit in the result. 
Result so far: 5.0
If we subtract 2035 from 2079, we get 44.
Append the next digit (0) from the dividend to 44 and continue with: 440 / 407

Moving on to step 5:
If we divide 440 by 407, we get 1 and a remainder of 33.
The next digit of our result is 1. 
Result so far: 51.0
If we take 407 away from 440, we end up with 33.
Include the next digit (6) from the dividend after 33, then repeat: 336 / 407

Let's proceed to step 6:
When dividing 336 by 407, we get 0 with a remainder of 336.
Write down 0 as next digit of the result. 
Result so far: 510.0
Subtract 0 from 336 to get 336.
Append the next digit (4) from the dividend to 336 and continue with: 3364 / 407

On to step 7:
407 can be fit into 3364 8 times, resulting in a remainder of 108.
Record the quotient 8 as the next digit in the result. 
Result so far: 5108.0
The remainder is 108 after subtracting 3256 from 3364.
Grab the next digit (5) from the dividend, add it to 108, then carry on: 1085 / 407

Step 8:
407 can be fit into 1085 2 times, resulting in a remainder of 271.
Use 2 as the next digit of our solution. 
Result so far: 51082.0
Subtract 814 from 1085 to get 271.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2710, and continue the process.

Advancing to step 9:
407 can be fit into 2710 6 times, resulting in a remainder of 268.
Write down 6 as next digit of the result. 
Result so far: 51082.6
Subtracting 2442 from 2710 leaves us 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.

Moving on to step 10:
407 goes into 2680 6 times with a remainder of 238.
Record the quotient 6 as the next digit in the result. 
Result so far: 51082.66
The remainder is 238 after subtracting 2442 from 2680.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2380, and continue the process.

Our division results in 51082.66 with a remaining 0.238.