Let's divide 43577711 by 301
The aim is to understand the frequency of 301 in 43577711.

On to step 1:
4 divided by 301 is 0 with a remainder of 4.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 4, we end up with 4.
Grab the next digit (3) from the dividend, add it to 4, then carry on: 43 / 301

Let's proceed to step 2:
301 can be fit into 43 0 times, resulting in a remainder of 43.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 43, we get 43.
Take the next digit (5) from the dividend and append it to 43, then repeat: 435 / 301

Moving on to step 3:
The number 301 fits into 435 1 times, leaving a remainder of 134.
Use 1 as the next digit of our solution. 
Result so far: 1.0
If we subtract 301 from 435, we get 134.
Append the next digit (7) from the dividend to 134 and continue with: 1347 / 301

Going ahead to step 4:
301 can be fit into 1347 4 times, resulting in a remainder of 143.
The next digit of our result is 4. 
Result so far: 14.0
The remainder is 143 after subtracting 1204 from 1347.
Append the next digit (7) from the dividend to 143 and continue with: 1437 / 301

Moving on to step 5:
The number 301 fits into 1437 4 times, leaving a remainder of 233.
The next digit of our result is 4. 
Result so far: 144.0
Subtract 1204 from 1437 to get 233.
Grab the next digit (7) from the dividend, add it to 233, then carry on: 2337 / 301

Moving on to step 6:
If we divide 2337 by 301, we get 7 and a remainder of 230.
The next digit of our result is 7. 
Result so far: 1447.0
If we subtract 2107 from 2337, we get 230.
Fetch the next digit (1) from the dividend, attach it to 230 and continue: 2301 / 301

Moving on to step 7:
The number 301 fits into 2301 7 times, leaving a remainder of 194.
Use 7 as the next digit of our solution. 
Result so far: 14477.0
Subtracting 2107 from 2301 leaves us with 194.
Append the next digit (1) from the dividend to 194 and continue with: 1941 / 301

On to step 8:
1941 divided by 301 is 6 with a remainder of 135.
Use 6 as the next digit of our solution. 
Result so far: 144776.0
Subtracting 1806 from 1941 leaves us with 135.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1350, and continue the process.

Step 9:
1350 divided by 301 is 4 with a remainder of 146.
Write down 4 as next digit of the result. 
Result so far: 144776.4
Deduct 1204 from 1350 and we're left with 146.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1460, and continue the process.

Advancing to step 10:
When dividing 1460 by 301, we get 4 with a remainder of 256.
Record the quotient 4 as the next digit in the result. 
Result so far: 144776.44
Deduct 1204 from 1460 and we're left with 256.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2560, and continue the process.

The final result is 144776.44 with a remainder of 0.256.