We divide 561142 by 77
The aim is to understand the frequency of 77 in 561142.

Going ahead to step 1:
If we divide 5 by 77, we get 0 and a remainder of 5.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 5 leaves us with 5.
Bring next digit (6) of the dividend behind the 5 and repeat the process: 56 / 77

Advancing to step 2:
The number 77 fits into 56 0 times, leaving a remainder of 56.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 56 leaves us with 56.
Include the next digit (1) from the dividend after 56, then repeat: 561 / 77

Advancing to step 3:
When dividing 561 by 77, we get 7 with a remainder of 22.
Write down 7 as next digit of the result. 
Result so far: 7.0
If we take 539 away from 561, we end up with 22.
Take the next digit (1) from the dividend and append it to 22, then repeat: 221 / 77

Going ahead to step 4:
221 divided by 77 is 2 with a remainder of 67.
Write down 2 as next digit of the result. 
Result so far: 72.0
If we take 154 away from 221, we end up with 67.
Fetch the next digit (4) from the dividend, attach it to 67 and continue: 674 / 77

Step 5:
77 goes into 674 8 times with a remainder of 58.
Use 8 as the next digit of our solution. 
Result so far: 728.0
If we take 616 away from 674, we end up with 58.
Include the next digit (2) from the dividend after 58, then repeat: 582 / 77

Moving on to step 6:
When dividing 582 by 77, we get 7 with a remainder of 43.
Write down 7 as next digit of the result. 
Result so far: 7287.0
The remainder is 43 after subtracting 539 from 582.
Since there are no more digits in the dividend, we add a zero to the remainder making it 430, and continue the process.

Advancing to step 7:
430 divided by 77 is 5 with a remainder of 45.
Put 5 as the next digit of the answer. 
Result so far: 7287.5
Deduct 385 from 430 and we're left with 45.
Since there are no more digits in the dividend, we add a zero to the remainder making it 450, and continue the process.

Let's proceed to step 8:
77 goes into 450 5 times with a remainder of 65.
Write down 5 as next digit of the result. 
Result so far: 7287.55
Subtracting 385 from 450 leaves us with 65.
Since there are no more digits in the dividend, we add a zero to the remainder making it 650, and continue the process.

The final outcome is 7287.55, with a leftover of 0.065.