422810 divided by 87 
The aim is to understand the frequency of 87 in 422810.

Advancing to step 1:
When dividing 4 by 87, we get 0 with a remainder of 4.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 4 and we're left with 4.
Fetch the next digit (2) from the dividend, attach it to 4 and continue: 42 / 87

On to step 2:
The number 87 fits into 42 0 times, leaving a remainder of 42.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 42, we end up with 42.
Append the next digit (2) from the dividend to 42 and continue with: 422 / 87

Step 3:
When dividing 422 by 87, we get 4 with a remainder of 74.
Use 4 as the next digit of our solution. 
Result so far: 4.0
If we subtract 348 from 422, we get 74.
Grab the next digit (8) from the dividend, add it to 74, then carry on: 748 / 87

Step 4:
748 divided by 87 is 8 with a remainder of 52.
Write down 8 as next digit of the result. 
Result so far: 48.0
Subtract 696 from 748 to get 52.
Include the next digit (1) from the dividend after 52, then repeat: 521 / 87

Let's proceed to step 5:
The number 87 fits into 521 5 times, leaving a remainder of 86.
The next digit of our result is 5. 
Result so far: 485.0
Subtracting 435 from 521 leaves us with 86.
Fetch the next digit (0) from the dividend, attach it to 86 and continue: 860 / 87

Step 6:
The number 87 fits into 860 9 times, leaving a remainder of 77.
Use 9 as the next digit of our solution. 
Result so far: 4859.0
Deduct 783 from 860 and we're left with 77.
Since there are no more digits in the dividend, we add a zero to the remainder making it 770, and continue the process.

Moving on to step 7:
When dividing 770 by 87, we get 8 with a remainder of 74.
Write down 8 as next digit of the result. 
Result so far: 4859.8
Deduct 696 from 770 and we're left with 74.
Since there are no more digits in the dividend, we add a zero to the remainder making it 740, and continue the process.

Going ahead to step 8:
740 divided by 87 is 8 with a remainder of 44.
Record the quotient 8 as the next digit in the result. 
Result so far: 4859.88
Subtract 696 from 740 to get 44.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

After the division, we end up with 4859.88 and a remainder of 0.044.