We're dividing 748540 by 77 
The aim is to understand the frequency of 77 in 748540.

Let's proceed to step 1:
If we divide 7 by 77, we get 0 and a remainder of 7.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 7 leaves us with 7.
Append the next digit (4) from the dividend to 7 and continue with: 74 / 77

On to step 2:
The number 77 fits into 74 0 times, leaving a remainder of 74.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 74 after subtracting 0 from 74.
Take the next digit (8) from the dividend and append it to 74, then repeat: 748 / 77

On to step 3:
The number 77 fits into 748 9 times, leaving a remainder of 55.
Record the quotient 9 as the next digit in the result. 
Result so far: 9.0
If we subtract 693 from 748, we get 55.
Bring next digit (5) of the dividend behind the 55 and repeat the process: 555 / 77

Going ahead to step 4:
555 divided by 77 is 7 with a remainder of 16.
Use 7 as the next digit of our solution. 
Result so far: 97.0
Deduct 539 from 555 and we're left with 16.
Append the next digit (4) from the dividend to 16 and continue with: 164 / 77

Let's proceed to step 5:
When dividing 164 by 77, we get 2 with a remainder of 10.
Write down 2 as next digit of the result. 
Result so far: 972.0
If we take 154 away from 164, we end up with 10.
Append the next digit (0) from the dividend to 10 and continue with: 100 / 77

On to step 6:
100 divided by 77 is 1 with a remainder of 23.
Record the quotient 1 as the next digit in the result. 
Result so far: 9721.0
If we subtract 77 from 100, we 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.

On to step 7:
77 can be fit into 230 2 times, resulting in a remainder of 76.
Write down 2 as next digit of the result. 
Result so far: 9721.2
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.

On to step 8:
77 can be fit into 760 9 times, resulting in a remainder of 67.
Record the quotient 9 as the next digit in the result. 
Result so far: 9721.29
Subtract 693 from 760 to get 67.
Since there are no more digits in the dividend, we add a zero to the remainder making it 670, and continue the process.

Advancing to step 9:
If we divide 670 by 77, we get 8 and a remainder of 54.
Use 8 as the next digit of our solution. 
Result so far: 9721.298
If we take 616 away from 670, we end up 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.

Advancing to step 10:
77 can be fit into 540 7 times, resulting in a remainder of 1.
The next digit of our result is 7. 
Result so far: 9721.2987
Subtract 539 from 540 to get 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Going ahead to step 11:
77 can be fit into 10 0 times, resulting in a remainder of 10.
The next digit of our result is 0. 
Result so far: 9721.2987
If we take 0 away from 10, we end up with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Moving on to step 12:
If we divide 100 by 77, we get 1 and a remainder of 23.
Write down 1 as next digit of the result. 
Result so far: 9721.298701
If we subtract 77 from 100, we 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.

Let's proceed to step 13:
The number 77 fits into 230 2 times, leaving a remainder of 76.
Use 2 as the next digit of our solution. 
Result so far: 9721.2987012
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.

Going ahead to step 14:
The number 77 fits into 760 9 times, leaving a remainder of 67.
Record the quotient 9 as the next digit in the result. 
Result so far: 9721.29870129
Subtract 693 from 760 to get 67.
Since there are no more digits in the dividend, we add a zero to the remainder making it 670, and continue the process.

After the division, we end up with 9721.29870129 and a remainder of 6.7e-08.