Let's divide 405572 by 77
The aim is to understand the frequency of 77 in 405572.

Going ahead to step 1:
If we divide 4 by 77, we get 0 and a remainder of 4.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 4, we get 4.
Fetch the next digit (0) from the dividend, attach it to 4 and continue: 40 / 77

Going ahead to step 2:
The number 77 fits into 40 0 times, leaving a remainder of 40.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 40, we get 40.
Fetch the next digit (5) from the dividend, attach it to 40 and continue: 405 / 77

Going ahead to step 3:
The number 77 fits into 405 5 times, leaving a remainder of 20.
Record the quotient 5 as the next digit in the result. 
Result so far: 5.0
Subtracting 385 from 405 leaves us with 20.
Take the next digit (5) from the dividend and append it to 20, then repeat: 205 / 77

Advancing to step 4:
77 goes into 205 2 times with a remainder of 51.
Put 2 as the next digit of the answer. 
Result so far: 52.0
Deduct 154 from 205 and we're left with 51.
Append the next digit (7) from the dividend to 51 and continue with: 517 / 77

Moving on to step 5:
When dividing 517 by 77, we get 6 with a remainder of 55.
Use 6 as the next digit of our solution. 
Result so far: 526.0
If we subtract 462 from 517, we get 55.
Fetch the next digit (2) from the dividend, attach it to 55 and continue: 552 / 77

Moving on to step 6:
77 goes into 552 7 times with a remainder of 13.
The number 7 becomes the next digit in our result. 
Result so far: 5267.0
Subtract 539 from 552 to 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.

On to step 7:
If we divide 130 by 77, we get 1 and a remainder of 53.
Put 1 as the next digit of the answer. 
Result so far: 5267.1
If we subtract 77 from 130, we get 53.
Since there are no more digits in the dividend, we add a zero to the remainder making it 530, and continue the process.

Advancing to step 8:
When dividing 530 by 77, we get 6 with a remainder of 68.
The number 6 becomes the next digit in our result. 
Result so far: 5267.16
Deduct 462 from 530 and we're left with 68.
Since there are no more digits in the dividend, we add a zero to the remainder making it 680, and continue the process.

Advancing to step 9:
77 goes into 680 8 times with a remainder of 64.
Record the quotient 8 as the next digit in the result. 
Result so far: 5267.168
Subtract 616 from 680 to get 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

Step 10:
77 can be fit into 640 8 times, resulting in a remainder of 24.
The number 8 becomes the next digit in our result. 
Result so far: 5267.1688
Deduct 616 from 640 and we're left with 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Our division results in 5267.1688 with a remaining 0.00024.