Let's divide 77539528 by 437
The aim is to understand the frequency of 437 in 77539528.

Advancing to step 1:
437 can be fit into 7 0 times, resulting in a remainder of 7.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 7 and we're left with 7.
Fetch the next digit (7) from the dividend, attach it to 7 and continue: 77 / 437

Moving on to step 2:
When dividing 77 by 437, we get 0 with a remainder of 77.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 77 and we're left with 77.
Grab the next digit (5) from the dividend, add it to 77, then carry on: 775 / 437

Going ahead to step 3:
775 divided by 437 is 1 with a remainder of 338.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Subtracting 437 from 775 leaves us with 338.
Bring next digit (3) of the dividend behind the 338 and repeat the process: 3383 / 437

Going ahead to step 4:
437 can be fit into 3383 7 times, resulting in a remainder of 324.
The number 7 becomes the next digit in our result. 
Result so far: 17.0
Subtracting 3059 from 3383 leaves us with 324.
Bring next digit (9) of the dividend behind the 324 and repeat the process: 3249 / 437

Going ahead to step 5:
437 can be fit into 3249 7 times, resulting in a remainder of 190.
The number 7 becomes the next digit in our result. 
Result so far: 177.0
Deduct 3059 from 3249 and we're left with 190.
Append the next digit (5) from the dividend to 190 and continue with: 1905 / 437

Going ahead to step 6:
437 goes into 1905 4 times with a remainder of 157.
Record the quotient 4 as the next digit in the result. 
Result so far: 1774.0
The remainder is 157 after subtracting 1748 from 1905.
Fetch the next digit (2) from the dividend, attach it to 157 and continue: 1572 / 437

Let's proceed to step 7:
The number 437 fits into 1572 3 times, leaving a remainder of 261.
Write down 3 as next digit of the result. 
Result so far: 17743.0
Subtract 1311 from 1572 to get 261.
Fetch the next digit (8) from the dividend, attach it to 261 and continue: 2618 / 437

Let's proceed to step 8:
437 can be fit into 2618 5 times, resulting in a remainder of 433.
Write down 5 as next digit of the result. 
Result so far: 177435.0
Deduct 2185 from 2618 and we're left with 433.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4330, and continue the process.

On to step 9:
If we divide 4330 by 437, we get 9 and a remainder of 397.
Record the quotient 9 as the next digit in the result. 
Result so far: 177435.9
If we take 3933 away from 4330, we end up with 397.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3970, and continue the process.

Moving on to step 10:
3970 divided by 437 is 9 with a remainder of 37.
The number 9 becomes the next digit in our result. 
Result so far: 177435.99
If we subtract 3933 from 3970, we get 37.
Since there are no more digits in the dividend, we add a zero to the remainder making it 370, and continue the process.

After the division, we end up with 177435.99 and a remainder of 0.037.