We divide 638202 by 77
The aim is to understand the frequency of 77 in 638202.

Let's proceed to step 1:
The number 77 fits into 6 0 times, leaving a remainder of 6.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 6, we get 6.
Include the next digit (3) from the dividend after 6, then repeat: 63 / 77

Let's proceed to step 2:
When dividing 63 by 77, we get 0 with a remainder of 63.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 63, we end up with 63.
Fetch the next digit (8) from the dividend, attach it to 63 and continue: 638 / 77

Advancing to step 3:
When dividing 638 by 77, we get 8 with a remainder of 22.
Record the quotient 8 as the next digit in the result. 
Result so far: 8.0
Subtract 616 from 638 to get 22.
Append the next digit (2) from the dividend to 22 and continue with: 222 / 77

On to step 4:
If we divide 222 by 77, we get 2 and a remainder of 68.
Put 2 as the next digit of the answer. 
Result so far: 82.0
Subtracting 154 from 222 leaves us with 68.
Append the next digit (0) from the dividend to 68 and continue with: 680 / 77

Going ahead to step 5:
The number 77 fits into 680 8 times, leaving a remainder of 64.
Write down 8 as next digit of the result. 
Result so far: 828.0
The remainder is 64 after subtracting 616 from 680.
Bring next digit (2) of the dividend behind the 64 and repeat the process: 642 / 77

Moving on to step 6:
77 goes into 642 8 times with a remainder of 26.
Record the quotient 8 as the next digit in the result. 
Result so far: 8288.0
Subtract 616 from 642 to get 26.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

Moving on to step 7:
77 goes into 260 3 times with a remainder of 29.
The number 3 becomes the next digit in our result. 
Result so far: 8288.3
The remainder is 29 after subtracting 231 from 260.
Since there are no more digits in the dividend, we add a zero to the remainder making it 290, and continue the process.

On to step 8:
77 goes into 290 3 times with a remainder of 59.
Record the quotient 3 as the next digit in the result. 
Result so far: 8288.33
Subtract 231 from 290 to get 59.
Since there are no more digits in the dividend, we add a zero to the remainder making it 590, and continue the process.

The final outcome is 8288.33, with a leftover of 0.059.