We look at the division of 351802 by 87 
The aim is to understand the frequency of 87 in 351802.

Advancing to step 1:
The number 87 fits into 3 0 times, leaving a remainder of 3.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 3, we get 3.
Include the next digit (5) from the dividend after 3, then repeat: 35 / 87

Advancing to step 2:
If we divide 35 by 87, we get 0 and a remainder of 35.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 35, we get 35.
Grab the next digit (1) from the dividend, add it to 35, then carry on: 351 / 87

Advancing to step 3:
When dividing 351 by 87, we get 4 with a remainder of 3.
Use 4 as the next digit of our solution. 
Result so far: 4.0
Deduct 348 from 351 and we're left with 3.
Take the next digit (8) from the dividend and append it to 3, then repeat: 38 / 87

Moving on to step 4:
When dividing 38 by 87, we get 0 with a remainder of 38.
Use 0 as the next digit of our solution. 
Result so far: 40.0
If we take 0 away from 38, we end up with 38.
Take the next digit (0) from the dividend and append it to 38, then repeat: 380 / 87

Advancing to step 5:
87 goes into 380 4 times with a remainder of 32.
Write down 4 as next digit of the result. 
Result so far: 404.0
Subtracting 348 from 380 leaves us with 32.
Append the next digit (2) from the dividend to 32 and continue with: 322 / 87

Step 6:
87 can be fit into 322 3 times, resulting in a remainder of 61.
Use 3 as the next digit of our solution. 
Result so far: 4043.0
If we take 261 away from 322, we end up with 61.
Since there are no more digits in the dividend, we add a zero to the remainder making it 610, and continue the process.

Advancing to step 7:
If we divide 610 by 87, we get 7 and a remainder of 1.
Put 7 as the next digit of the answer. 
Result so far: 4043.7
Deduct 609 from 610 and we're left with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Step 8:
The number 87 fits into 10 0 times, leaving a remainder of 10.
The number 0 becomes the next digit in our result. 
Result so far: 4043.7
The remainder is 10 after subtracting 0 from 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Moving on to step 9:
87 goes into 100 1 times with a remainder of 13.
Use 1 as the next digit of our solution. 
Result so far: 4043.701
If we subtract 87 from 100, we get 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Step 10:
87 goes into 130 1 times with a remainder of 43.
Use 1 as the next digit of our solution. 
Result so far: 4043.7011
If we take 87 away from 130, we end up with 43.
Since there are no more digits in the dividend, we add a zero to the remainder making it 430, and continue the process.

In conclusion, the division gives 4043.7011 with a balance of 0.00043.