We divide 874102 by 20
The aim is to understand the frequency of 20 in 874102.

Step 1:
8 divided by 20 is 0 with a remainder of 8.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 8 leaves us with 8.
Append the next digit (7) from the dividend to 8 and continue with: 87 / 20

Step 2:
The number 20 fits into 87 4 times, leaving a remainder of 7.
The next digit of our result is 4. 
Result so far: 4.0
Deduct 80 from 87 and we're left with 7.
Append the next digit (4) from the dividend to 7 and continue with: 74 / 20

Going ahead to step 3:
If we divide 74 by 20, we get 3 and a remainder of 14.
Record the quotient 3 as the next digit in the result. 
Result so far: 43.0
Subtract 60 from 74 to get 14.
Grab the next digit (1) from the dividend, add it to 14, then carry on: 141 / 20

Let's proceed to step 4:
141 divided by 20 is 7 with a remainder of 1.
Put 7 as the next digit of the answer. 
Result so far: 437.0
Subtract 140 from 141 to get 1.
Append the next digit (0) from the dividend to 1 and continue with: 10 / 20

Going ahead to step 5:
10 divided by 20 is 0 with a remainder of 10.
The next digit of our result is 0. 
Result so far: 4370.0
If we subtract 0 from 10, we get 10.
Append the next digit (2) from the dividend to 10 and continue with: 102 / 20

Going ahead to step 6:
If we divide 102 by 20, we get 5 and a remainder of 2.
The next digit of our result is 5. 
Result so far: 43705.0
Subtracting 100 from 102 leaves us with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Let's proceed to step 7:
When dividing 20 by 20, we get 1 with a remainder of 0.
Write down 1 as next digit of the result. 
Result so far: 43705.1
If we take 20 away from 20, we end up with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Going ahead to step 8:
When dividing 0 by 20, we get 0 with a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 43705.1
Subtract 0 from 0 to get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Going ahead to step 9:
When dividing 0 by 20, we get 0 with a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 43705.1
Deduct 0 from 0 and we're left with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

After the division, we end up with 43705.1 and a remainder of 0.0.