We're dividing 13216551 by 377 
The aim is to understand the frequency of 377 in 13216551.

Step 1:
377 goes into 1 0 times with a remainder of 1.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 1 after subtracting 0 from 1.
Bring next digit (3) of the dividend behind the 1 and repeat the process: 13 / 377

Let's proceed to step 2:
If we divide 13 by 377, we get 0 and a remainder of 13.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 13 after subtracting 0 from 13.
Include the next digit (2) from the dividend after 13, then repeat: 132 / 377

On to step 3:
132 divided by 377 is 0 with a remainder of 132.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 132, we get 132.
Append the next digit (1) from the dividend to 132 and continue with: 1321 / 377

Advancing to step 4:
If we divide 1321 by 377, we get 3 and a remainder of 190.
The number 3 becomes the next digit in our result. 
Result so far: 3.0
If we subtract 1131 from 1321, we get 190.
Append the next digit (6) from the dividend to 190 and continue with: 1906 / 377

Step 5:
377 goes into 1906 5 times with a remainder of 21.
The next digit of our result is 5. 
Result so far: 35.0
If we take 1885 away from 1906, we end up with 21.
Take the next digit (5) from the dividend and append it to 21, then repeat: 215 / 377

Advancing to step 6:
215 divided by 377 is 0 with a remainder of 215.
The number 0 becomes the next digit in our result. 
Result so far: 350.0
If we take 0 away from 215, we end up with 215.
Append the next digit (5) from the dividend to 215 and continue with: 2155 / 377

Let's proceed to step 7:
When dividing 2155 by 377, we get 5 with a remainder of 270.
The next digit of our result is 5. 
Result so far: 3505.0
If we subtract 1885 from 2155, we get 270.
Bring next digit (1) of the dividend behind the 270 and repeat the process: 2701 / 377

Going ahead to step 8:
The number 377 fits into 2701 7 times, leaving a remainder of 62.
Put 7 as the next digit of the answer. 
Result so far: 35057.0
The remainder is 62 after subtracting 2639 from 2701.
Since there are no more digits in the dividend, we add a zero to the remainder making it 620, and continue the process.

Step 9:
377 can be fit into 620 1 times, resulting in a remainder of 243.
Put 1 as the next digit of the answer. 
Result so far: 35057.1
If we subtract 377 from 620, we get 243.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2430, and continue the process.

Going ahead to step 10:
If we divide 2430 by 377, we get 6 and a remainder of 168.
Record the quotient 6 as the next digit in the result. 
Result so far: 35057.16
Subtract 2262 from 2430 to get 168.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1680, and continue the process.

Let's proceed to step 11:
When dividing 1680 by 377, we get 4 with a remainder of 172.
Record the quotient 4 as the next digit in the result. 
Result so far: 35057.164
The remainder is 172 after subtracting 1508 from 1680.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1720, and continue the process.

Moving on to step 12:
1720 divided by 377 is 4 with a remainder of 212.
Write down 4 as next digit of the result. 
Result so far: 35057.1644
Subtracting 1508 from 1720 leaves us with 212.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2120, and continue the process.

The final outcome is 35057.1644, with a leftover of 0.00212.