We look at the division of 81217400 by 436 
The aim is to understand the frequency of 436 in 81217400.

Step 1:
436 goes into 8 0 times with a remainder of 8.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 8, we get 8.
Take the next digit (1) from the dividend and append it to 8, then repeat: 81 / 436

Step 2:
436 can be fit into 81 0 times, resulting in a remainder of 81.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 81 leaves us with 81.
Grab the next digit (2) from the dividend, add it to 81, then carry on: 812 / 436

Moving on to step 3:
812 divided by 436 is 1 with a remainder of 376.
The next digit of our result is 1. 
Result so far: 1.0
Deduct 436 from 812 and we're left with 376.
Take the next digit (1) from the dividend and append it to 376, then repeat: 3761 / 436

Step 4:
If we divide 3761 by 436, we get 8 and a remainder of 273.
Use 8 as the next digit of our solution. 
Result so far: 18.0
The remainder is 273 after subtracting 3488 from 3761.
Fetch the next digit (7) from the dividend, attach it to 273 and continue: 2737 / 436

Advancing to step 5:
If we divide 2737 by 436, we get 6 and a remainder of 121.
Record the quotient 6 as the next digit in the result. 
Result so far: 186.0
Subtracting 2616 from 2737 leaves us with 121.
Take the next digit (4) from the dividend and append it to 121, then repeat: 1214 / 436

Let's proceed to step 6:
The number 436 fits into 1214 2 times, leaving a remainder of 342.
Record the quotient 2 as the next digit in the result. 
Result so far: 1862.0
The remainder is 342 after subtracting 872 from 1214.
Grab the next digit (0) from the dividend, add it to 342, then carry on: 3420 / 436

Moving on to step 7:
When dividing 3420 by 436, we get 7 with a remainder of 368.
The number 7 becomes the next digit in our result. 
Result so far: 18627.0
The remainder is 368 after subtracting 3052 from 3420.
Grab the next digit (0) from the dividend, add it to 368, then carry on: 3680 / 436

Let's proceed to step 8:
The number 436 fits into 3680 8 times, leaving a remainder of 192.
Write down 8 as next digit of the result. 
Result so far: 186278.0
Deduct 3488 from 3680 and we're left with 192.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1920, and continue the process.

Let's proceed to step 9:
436 goes into 1920 4 times with a remainder of 176.
Put 4 as the next digit of the answer. 
Result so far: 186278.4
The remainder is 176 after subtracting 1744 from 1920.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1760, and continue the process.

Let's proceed to step 10:
436 can be fit into 1760 4 times, resulting in a remainder of 16.
The number 4 becomes the next digit in our result. 
Result so far: 186278.44
If we subtract 1744 from 1760, we get 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Our division results in 186278.44 with a remaining 0.016.