We're dividing 137290 by 77 
The aim is to understand the frequency of 77 in 137290.

Step 1:
If we divide 1 by 77, we get 0 and a remainder of 1.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 1 leaves us with 1.
Include the next digit (3) from the dividend after 1, then repeat: 13 / 77

Advancing to step 2:
13 divided by 77 is 0 with a remainder of 13.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 13 after subtracting 0 from 13.
Fetch the next digit (7) from the dividend, attach it to 13 and continue: 137 / 77

Let's proceed to step 3:
When dividing 137 by 77, we get 1 with a remainder of 60.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Deduct 77 from 137 and we're left with 60.
Bring next digit (2) of the dividend behind the 60 and repeat the process: 602 / 77

On to step 4:
The number 77 fits into 602 7 times, leaving a remainder of 63.
The number 7 becomes the next digit in our result. 
Result so far: 17.0
If we subtract 539 from 602, we get 63.
Take the next digit (9) from the dividend and append it to 63, then repeat: 639 / 77

Let's proceed to step 5:
77 goes into 639 8 times with a remainder of 23.
Put 8 as the next digit of the answer. 
Result so far: 178.0
Deduct 616 from 639 and we're left with 23.
Include the next digit (0) from the dividend after 23, then repeat: 230 / 77

Let's proceed to step 6:
When dividing 230 by 77, we get 2 with a remainder of 76.
Write down 2 as next digit of the result. 
Result so far: 1782.0
If we subtract 154 from 230, we get 76.
Since there are no more digits in the dividend, we add a zero to the remainder making it 760, and continue the process.

Going ahead to step 7:
77 goes into 760 9 times with a remainder of 67.
The number 9 becomes the next digit in our result. 
Result so far: 1782.9
Deduct 693 from 760 and we're left with 67.
Since there are no more digits in the dividend, we add a zero to the remainder making it 670, and continue the process.

Step 8:
77 goes into 670 8 times with a remainder of 54.
Put 8 as the next digit of the answer. 
Result so far: 1782.98
Subtracting 616 from 670 leaves us with 54.
Since there are no more digits in the dividend, we add a zero to the remainder making it 540, and continue the process.

Going ahead to step 9:
540 divided by 77 is 7 with a remainder of 1.
Put 7 as the next digit of the answer. 
Result so far: 1782.987
Deduct 539 from 540 and we're left with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Moving on to step 10:
The number 77 fits into 10 0 times, leaving a remainder of 10.
Write down 0 as next digit of the result. 
Result so far: 1782.987
The remainder is 10 after subtracting 0 from 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Step 11:
77 goes into 100 1 times with a remainder of 23.
The number 1 becomes the next digit in our result. 
Result so far: 1782.98701
Subtract 77 from 100 to get 23.
Since there are no more digits in the dividend, we add a zero to the remainder making it 230, and continue the process.

Going ahead to step 12:
If we divide 230 by 77, we get 2 and a remainder of 76.
Record the quotient 2 as the next digit in the result. 
Result so far: 1782.987012
If we take 154 away from 230, we end up with 76.
Since there are no more digits in the dividend, we add a zero to the remainder making it 760, and continue the process.

Advancing to step 13:
The number 77 fits into 760 9 times, leaving a remainder of 67.
Write down 9 as next digit of the result. 
Result so far: 1782.9870129
Subtracting 693 from 760 leaves us with 67.
Since there are no more digits in the dividend, we add a zero to the remainder making it 670, and continue the process.

Let's proceed to step 14:
77 goes into 670 8 times with a remainder of 54.
Use 8 as the next digit of our solution. 
Result so far: 1782.98701298
Subtracting 616 from 670 leaves us with 54.
Since there are no more digits in the dividend, we add a zero to the remainder making it 540, and continue the process.

After the division, we end up with 1782.98701298 and a remainder of 5.4e-08.