Let's divide 10420618 by 620
The aim is to understand the frequency of 620 in 10420618.

Moving on to step 1:
1 divided by 620 is 0 with a remainder of 1.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 1 leaves us with 1.
Bring next digit (0) of the dividend behind the 1 and repeat the process: 10 / 620

On to step 2:
The number 620 fits into 10 0 times, leaving a remainder of 10.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 10 leaves us with 10.
Fetch the next digit (4) from the dividend, attach it to 10 and continue: 104 / 620

Moving on to step 3:
When dividing 104 by 620, we get 0 with a remainder of 104.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 104, we end up with 104.
Fetch the next digit (2) from the dividend, attach it to 104 and continue: 1042 / 620

Step 4:
The number 620 fits into 1042 1 times, leaving a remainder of 422.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
If we take 620 away from 1042, we end up with 422.
Bring next digit (0) of the dividend behind the 422 and repeat the process: 4220 / 620

Advancing to step 5:
When dividing 4220 by 620, we get 6 with a remainder of 500.
Put 6 as the next digit of the answer. 
Result so far: 16.0
The remainder is 500 after subtracting 3720 from 4220.
Include the next digit (6) from the dividend after 500, then repeat: 5006 / 620

Advancing to step 6:
The number 620 fits into 5006 8 times, leaving a remainder of 46.
The next digit of our result is 8. 
Result so far: 168.0
If we subtract 4960 from 5006, we get 46.
Append the next digit (1) from the dividend to 46 and continue with: 461 / 620

Going ahead to step 7:
620 goes into 461 0 times with a remainder of 461.
Put 0 as the next digit of the answer. 
Result so far: 1680.0
If we take 0 away from 461, we end up with 461.
Append the next digit (8) from the dividend to 461 and continue with: 4618 / 620

Let's proceed to step 8:
4618 divided by 620 is 7 with a remainder of 278.
Write down 7 as next digit of the result. 
Result so far: 16807.0
If we take 4340 away from 4618, we end up with 278.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2780, and continue the process.

Step 9:
If we divide 2780 by 620, we get 4 and a remainder of 300.
Put 4 as the next digit of the answer. 
Result so far: 16807.4
If we subtract 2480 from 2780, we get 300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3000, and continue the process.

Advancing to step 10:
The number 620 fits into 3000 4 times, leaving a remainder of 520.
Record the quotient 4 as the next digit in the result. 
Result so far: 16807.44
The remainder is 520 after subtracting 2480 from 3000.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5200, and continue the process.

After the division, we end up with 16807.44 and a remainder of 0.52.