We're dividing 958437 by 77 
The aim is to understand the frequency of 77 in 958437.

Going ahead to step 1:
The number 77 fits into 9 0 times, leaving a remainder of 9.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 9 leaves us with 9.
Fetch the next digit (5) from the dividend, attach it to 9 and continue: 95 / 77

On to step 2:
When dividing 95 by 77, we get 1 with a remainder of 18.
Write down 1 as next digit of the result. 
Result so far: 1.0
The remainder is 18 after subtracting 77 from 95.
Bring next digit (8) of the dividend behind the 18 and repeat the process: 188 / 77

On to step 3:
188 divided by 77 is 2 with a remainder of 34.
Write down 2 as next digit of the result. 
Result so far: 12.0
Deduct 154 from 188 and we're left with 34.
Grab the next digit (4) from the dividend, add it to 34, then carry on: 344 / 77

On to step 4:
When dividing 344 by 77, we get 4 with a remainder of 36.
Use 4 as the next digit of our solution. 
Result so far: 124.0
Deduct 308 from 344 and we're left with 36.
Fetch the next digit (3) from the dividend, attach it to 36 and continue: 363 / 77

Let's proceed to step 5:
When dividing 363 by 77, we get 4 with a remainder of 55.
Write down 4 as next digit of the result. 
Result so far: 1244.0
Subtract 308 from 363 to get 55.
Take the next digit (7) from the dividend and append it to 55, then repeat: 557 / 77

Step 6:
When dividing 557 by 77, we get 7 with a remainder of 18.
Put 7 as the next digit of the answer. 
Result so far: 12447.0
Deduct 539 from 557 and we're left with 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Let's proceed to step 7:
The number 77 fits into 180 2 times, leaving a remainder of 26.
The next digit of our result is 2. 
Result so far: 12447.2
Subtract 154 from 180 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 8:
If we divide 260 by 77, we get 3 and a remainder of 29.
The number 3 becomes the next digit in our result. 
Result so far: 12447.23
If we subtract 231 from 260, we get 29.
Since there are no more digits in the dividend, we add a zero to the remainder making it 290, and continue the process.

Let's proceed to step 9:
When dividing 290 by 77, we get 3 with a remainder of 59.
Write down 3 as next digit of the result. 
Result so far: 12447.233
Subtracting 231 from 290 leaves us with 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 12447.233, with a leftover of 0.0059.