377804 ÷ 81 
The aim is to understand the frequency of 81 in 377804.

Step 1:
81 can be fit into 3 0 times, resulting in a remainder of 3.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 3 to get 3.
Bring next digit (7) of the dividend behind the 3 and repeat the process: 37 / 81

Advancing to step 2:
When dividing 37 by 81, we get 0 with a remainder of 37.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 37 to get 37.
Append the next digit (7) from the dividend to 37 and continue with: 377 / 81

Going ahead to step 3:
The number 81 fits into 377 4 times, leaving a remainder of 53.
The number 4 becomes the next digit in our result. 
Result so far: 4.0
The remainder is 53 after subtracting 324 from 377.
Bring next digit (8) of the dividend behind the 53 and repeat the process: 538 / 81

Advancing to step 4:
When dividing 538 by 81, we get 6 with a remainder of 52.
Use 6 as the next digit of our solution. 
Result so far: 46.0
If we take 486 away from 538, we end up with 52.
Fetch the next digit (0) from the dividend, attach it to 52 and continue: 520 / 81

Going ahead to step 5:
81 goes into 520 6 times with a remainder of 34.
The next digit of our result is 6. 
Result so far: 466.0
Subtracting 486 from 520 leaves us with 34.
Take the next digit (4) from the dividend and append it to 34, then repeat: 344 / 81

Advancing to step 6:
81 can be fit into 344 4 times, resulting in a remainder of 20.
Put 4 as the next digit of the answer. 
Result so far: 4664.0
Deduct 324 from 344 and we're left with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Moving on to step 7:
81 can be fit into 200 2 times, resulting in a remainder of 38.
Put 2 as the next digit of the answer. 
Result so far: 4664.2
Deduct 162 from 200 and we're left with 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Step 8:
81 goes into 380 4 times with a remainder of 56.
Use 4 as the next digit of our solution. 
Result so far: 4664.24
Deduct 324 from 380 and we're left with 56.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

On to step 9:
When dividing 560 by 81, we get 6 with a remainder of 74.
Record the quotient 6 as the next digit in the result. 
Result so far: 4664.246
If we subtract 486 from 560, we get 74.
Since there are no more digits in the dividend, we add a zero to the remainder making it 740, and continue the process.

Let's proceed to step 10:
81 goes into 740 9 times with a remainder of 11.
Put 9 as the next digit of the answer. 
Result so far: 4664.2469
Deduct 729 from 740 and we're left with 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

On to step 11:
81 goes into 110 1 times with a remainder of 29.
Use 1 as the next digit of our solution. 
Result so far: 4664.24691
If we take 81 away from 110, we end up with 29.
Since there are no more digits in the dividend, we add a zero to the remainder making it 290, and continue the process.

Moving on to step 12:
290 divided by 81 is 3 with a remainder of 47.
The number 3 becomes the next digit in our result. 
Result so far: 4664.246913
If we subtract 243 from 290, we get 47.
Since there are no more digits in the dividend, we add a zero to the remainder making it 470, and continue the process.

Advancing to step 13:
If we divide 470 by 81, we get 5 and a remainder of 65.
The next digit of our result is 5. 
Result so far: 4664.2469135
Deduct 405 from 470 and we're left with 65.
Since there are no more digits in the dividend, we add a zero to the remainder making it 650, and continue the process.

Moving on to step 14:
The number 81 fits into 650 8 times, leaving a remainder of 2.
Write down 8 as next digit of the result. 
Result so far: 4664.24691358
If we subtract 648 from 650, we get 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

In conclusion, the division gives 4664.24691358 with a balance of 2e-09.