We're dividing 339570 by 77 
The aim is to understand the frequency of 77 in 339570.

Moving on to step 1:
3 divided by 77 is 0 with a remainder of 3.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 3, we get 3.
Include the next digit (3) from the dividend after 3, then repeat: 33 / 77

Advancing to step 2:
77 can be fit into 33 0 times, resulting in a remainder of 33.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 33 after subtracting 0 from 33.
Include the next digit (9) from the dividend after 33, then repeat: 339 / 77

Step 3:
When dividing 339 by 77, we get 4 with a remainder of 31.
The number 4 becomes the next digit in our result. 
Result so far: 4.0
The remainder is 31 after subtracting 308 from 339.
Grab the next digit (5) from the dividend, add it to 31, then carry on: 315 / 77

On to step 4:
315 divided by 77 is 4 with a remainder of 7.
The number 4 becomes the next digit in our result. 
Result so far: 44.0
The remainder is 7 after subtracting 308 from 315.
Append the next digit (7) from the dividend to 7 and continue with: 77 / 77

Let's proceed to step 5:
77 goes into 77 1 times with a remainder of 0.
Use 1 as the next digit of our solution. 
Result so far: 441.0
Deduct 77 from 77 and we're left with 0.
Bring next digit (0) of the dividend behind the 0 and repeat the process: 0 / 77

On to step 6:
The number 77 fits into 0 0 times, leaving a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 4410.0
Subtract 0 from 0 to get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Going ahead to step 7:
The number 77 fits into 0 0 times, leaving a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 4410.0
If we take 0 away from 0, we end up with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Moving on to step 8:
The number 77 fits into 0 0 times, leaving a remainder of 0.
The next digit of our result is 0. 
Result so far: 4410.0
If we take 0 away from 0, we end up with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The final outcome is 4410.0, with a leftover of 0.0.