We look at the division of 445722 by 87 
The aim is to understand the frequency of 87 in 445722.

Let's proceed to step 1:
When dividing 4 by 87, we get 0 with a remainder of 4.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 4, we end up with 4.
Append the next digit (4) from the dividend to 4 and continue with: 44 / 87

Let's proceed to step 2:
87 goes into 44 0 times with a remainder of 44.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 44 to get 44.
Take the next digit (5) from the dividend and append it to 44, then repeat: 445 / 87

On to step 3:
When dividing 445 by 87, we get 5 with a remainder of 10.
Use 5 as the next digit of our solution. 
Result so far: 5.0
If we take 435 away from 445, we end up with 10.
Fetch the next digit (7) from the dividend, attach it to 10 and continue: 107 / 87

Moving on to step 4:
The number 87 fits into 107 1 times, leaving a remainder of 20.
Use 1 as the next digit of our solution. 
Result so far: 51.0
If we take 87 away from 107, we end up with 20.
Grab the next digit (2) from the dividend, add it to 20, then carry on: 202 / 87

Let's proceed to step 5:
202 divided by 87 is 2 with a remainder of 28.
The number 2 becomes the next digit in our result. 
Result so far: 512.0
Deduct 174 from 202 and we're left with 28.
Append the next digit (2) from the dividend to 28 and continue with: 282 / 87

Moving on to step 6:
When dividing 282 by 87, we get 3 with a remainder of 21.
The number 3 becomes the next digit in our result. 
Result so far: 5123.0
The remainder is 21 after subtracting 261 from 282.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

Advancing to step 7:
If we divide 210 by 87, we get 2 and a remainder of 36.
The number 2 becomes the next digit in our result. 
Result so far: 5123.2
Subtracting 174 from 210 leaves us with 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Advancing to step 8:
87 can be fit into 360 4 times, resulting in a remainder of 12.
The next digit of our result is 4. 
Result so far: 5123.24
Subtract 348 from 360 to get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Moving on to step 9:
If we divide 120 by 87, we get 1 and a remainder of 33.
The number 1 becomes the next digit in our result. 
Result so far: 5123.241
If we take 87 away from 120, we end up with 33.
Since there are no more digits in the dividend, we add a zero to the remainder making it 330, and continue the process.

Let's proceed to step 10:
87 can be fit into 330 3 times, resulting in a remainder of 69.
Use 3 as the next digit of our solution. 
Result so far: 5123.2413
The remainder is 69 after subtracting 261 from 330.
Since there are no more digits in the dividend, we add a zero to the remainder making it 690, and continue the process.

Advancing to step 11:
If we divide 690 by 87, we get 7 and a remainder of 81.
Record the quotient 7 as the next digit in the result. 
Result so far: 5123.24137
Subtracting 609 from 690 leaves us with 81.
Since there are no more digits in the dividend, we add a zero to the remainder making it 810, and continue the process.

Step 12:
The number 87 fits into 810 9 times, leaving a remainder of 27.
The number 9 becomes the next digit in our result. 
Result so far: 5123.241379
If we take 783 away from 810, we end up with 27.
Since there are no more digits in the dividend, we add a zero to the remainder making it 270, and continue the process.

Advancing to step 13:
87 goes into 270 3 times with a remainder of 9.
Write down 3 as next digit of the result. 
Result so far: 5123.2413793
The remainder is 9 after subtracting 261 from 270.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

On to step 14:
If we divide 90 by 87, we get 1 and a remainder of 3.
Write down 1 as next digit of the result. 
Result so far: 5123.24137931
If we subtract 87 from 90, we get 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

The final outcome is 5123.24137931, with a leftover of 3e-09.