Let's divide 13015037 by 771
The aim is to understand the frequency of 771 in 13015037.

Step 1:
771 can be fit into 1 0 times, resulting in a remainder of 1.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 1, we get 1.
Fetch the next digit (3) from the dividend, attach it to 1 and continue: 13 / 771

Let's proceed to step 2:
771 goes into 13 0 times with a remainder of 13.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 13 and we're left with 13.
Fetch the next digit (0) from the dividend, attach it to 13 and continue: 130 / 771

On to step 3:
The number 771 fits into 130 0 times, leaving a remainder of 130.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 130 after subtracting 0 from 130.
Bring next digit (1) of the dividend behind the 130 and repeat the process: 1301 / 771

On to step 4:
If we divide 1301 by 771, we get 1 and a remainder of 530.
Write down 1 as next digit of the result. 
Result so far: 1.0
If we subtract 771 from 1301, we get 530.
Take the next digit (5) from the dividend and append it to 530, then repeat: 5305 / 771

Going ahead to step 5:
771 can be fit into 5305 6 times, resulting in a remainder of 679.
Use 6 as the next digit of our solution. 
Result so far: 16.0
If we take 4626 away from 5305, we end up with 679.
Grab the next digit (0) from the dividend, add it to 679, then carry on: 6790 / 771

Step 6:
When dividing 6790 by 771, we get 8 with a remainder of 622.
The next digit of our result is 8. 
Result so far: 168.0
The remainder is 622 after subtracting 6168 from 6790.
Include the next digit (3) from the dividend after 622, then repeat: 6223 / 771

Step 7:
6223 divided by 771 is 8 with a remainder of 55.
Use 8 as the next digit of our solution. 
Result so far: 1688.0
If we take 6168 away from 6223, we end up with 55.
Take the next digit (7) from the dividend and append it to 55, then repeat: 557 / 771

Moving on to step 8:
771 goes into 557 0 times with a remainder of 557.
Use 0 as the next digit of our solution. 
Result so far: 16880.0
Subtract 0 from 557 to get 557.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5570, and continue the process.

Step 9:
771 goes into 5570 7 times with a remainder of 173.
The next digit of our result is 7. 
Result so far: 16880.7
If we subtract 5397 from 5570, we get 173.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1730, and continue the process.

Step 10:
When dividing 1730 by 771, we get 2 with a remainder of 188.
The number 2 becomes the next digit in our result. 
Result so far: 16880.72
Subtract 1542 from 1730 to get 188.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1880, and continue the process.

Let's proceed to step 11:
771 goes into 1880 2 times with a remainder of 338.
Record the quotient 2 as the next digit in the result. 
Result so far: 16880.722
Subtracting 1542 from 1880 leaves us with 338.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3380, and continue the process.

After the division, we end up with 16880.722 and a remainder of 0.0338.