We look at the division of 36647511 by 977 
The aim is to understand the frequency of 977 in 36647511.

On to step 1:
3 divided by 977 is 0 with a remainder of 3.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 3, we end up with 3.
Bring next digit (6) of the dividend behind the 3 and repeat the process: 36 / 977

On to step 2:
The number 977 fits into 36 0 times, leaving a remainder of 36.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 36 and we're left with 36.
Take the next digit (6) from the dividend and append it to 36, then repeat: 366 / 977

Advancing to step 3:
977 goes into 366 0 times with a remainder of 366.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 366, we get 366.
Fetch the next digit (4) from the dividend, attach it to 366 and continue: 3664 / 977

On to step 4:
If we divide 3664 by 977, we get 3 and a remainder of 733.
Put 3 as the next digit of the answer. 
Result so far: 3.0
If we take 2931 away from 3664, we end up with 733.
Bring next digit (7) of the dividend behind the 733 and repeat the process: 7337 / 977

Step 5:
977 goes into 7337 7 times with a remainder of 498.
The number 7 becomes the next digit in our result. 
Result so far: 37.0
Subtract 6839 from 7337 to get 498.
Include the next digit (5) from the dividend after 498, then repeat: 4985 / 977

Let's proceed to step 6:
The number 977 fits into 4985 5 times, leaving a remainder of 100.
Put 5 as the next digit of the answer. 
Result so far: 375.0
Subtracting 4885 from 4985 leaves us with 100.
Grab the next digit (1) from the dividend, add it to 100, then carry on: 1001 / 977

Moving on to step 7:
If we divide 1001 by 977, we get 1 and a remainder of 24.
Use 1 as the next digit of our solution. 
Result so far: 3751.0
If we take 977 away from 1001, we end up with 24.
Grab the next digit (1) from the dividend, add it to 24, then carry on: 241 / 977

Step 8:
If we divide 241 by 977, we get 0 and a remainder of 241.
Write down 0 as next digit of the result. 
Result so far: 37510.0
The remainder is 241 after subtracting 0 from 241.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2410, and continue the process.

Going ahead to step 9:
977 goes into 2410 2 times with a remainder of 456.
Record the quotient 2 as the next digit in the result. 
Result so far: 37510.2
Subtracting 1954 from 2410 leaves us with 456.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4560, and continue the process.

Step 10:
The number 977 fits into 4560 4 times, leaving a remainder of 652.
The number 4 becomes the next digit in our result. 
Result so far: 37510.24
Deduct 3908 from 4560 and we're left with 652.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6520, and continue the process.

Let's proceed to step 11:
6520 divided by 977 is 6 with a remainder of 658.
Use 6 as the next digit of our solution. 
Result so far: 37510.246
If we take 5862 away from 6520, we end up with 658.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6580, and continue the process.

Step 12:
6580 divided by 977 is 6 with a remainder of 718.
Write down 6 as next digit of the result. 
Result so far: 37510.2466
Subtracting 5862 from 6580 leaves us with 718.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7180, and continue the process.

The final result is 37510.2466 with a remainder of 0.00718.