We look at the division of 15480889 by 377 
The aim is to understand the frequency of 377 in 15480889.

Step 1:
The number 377 fits into 1 0 times, leaving a remainder of 1.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 1 after subtracting 0 from 1.
Include the next digit (5) from the dividend after 1, then repeat: 15 / 377

Going ahead to step 2:
377 can be fit into 15 0 times, resulting in a remainder of 15.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 15, we end up with 15.
Fetch the next digit (4) from the dividend, attach it to 15 and continue: 154 / 377

On to step 3:
The number 377 fits into 154 0 times, leaving a remainder of 154.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 154, we end up with 154.
Grab the next digit (8) from the dividend, add it to 154, then carry on: 1548 / 377

Advancing to step 4:
377 can be fit into 1548 4 times, resulting in a remainder of 40.
The next digit of our result is 4. 
Result so far: 4.0
Subtract 1508 from 1548 to get 40.
Take the next digit (0) from the dividend and append it to 40, then repeat: 400 / 377

Step 5:
If we divide 400 by 377, we get 1 and a remainder of 23.
Use 1 as the next digit of our solution. 
Result so far: 41.0
Subtract 377 from 400 to get 23.
Append the next digit (8) from the dividend to 23 and continue with: 238 / 377

Going ahead to step 6:
377 goes into 238 0 times with a remainder of 238.
Write down 0 as next digit of the result. 
Result so far: 410.0
Subtract 0 from 238 to get 238.
Bring next digit (8) of the dividend behind the 238 and repeat the process: 2388 / 377

Advancing to step 7:
If we divide 2388 by 377, we get 6 and a remainder of 126.
Use 6 as the next digit of our solution. 
Result so far: 4106.0
Subtracting 2262 from 2388 leaves us with 126.
Include the next digit (9) from the dividend after 126, then repeat: 1269 / 377

Let's proceed to step 8:
When dividing 1269 by 377, we get 3 with a remainder of 138.
Write down 3 as next digit of the result. 
Result so far: 41063.0
If we take 1131 away from 1269, we end up with 138.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1380, and continue the process.

Going ahead to step 9:
The number 377 fits into 1380 3 times, leaving a remainder of 249.
Record the quotient 3 as the next digit in the result. 
Result so far: 41063.3
Subtracting 1131 from 1380 leaves us with 249.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2490, and continue the process.

Going ahead to step 10:
When dividing 2490 by 377, we get 6 with a remainder of 228.
Put 6 as the next digit of the answer. 
Result so far: 41063.36
Subtract 2262 from 2490 to get 228.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2280, and continue the process.

Moving on to step 11:
377 goes into 2280 6 times with a remainder of 18.
Write down 6 as next digit of the result. 
Result so far: 41063.366
Deduct 2262 from 2280 and we're left with 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Our division results in 41063.366 with a remaining 0.0018.