79123177 ÷ 84 
The aim is to understand the frequency of 84 in 79123177.

Moving on to step 1:
When dividing 7 by 84, we get 0 with a remainder of 7.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 7, we end up with 7.
Append the next digit (9) from the dividend to 7 and continue with: 79 / 84

Step 2:
If we divide 79 by 84, we get 0 and a remainder of 79.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 79 and we're left with 79.
Fetch the next digit (1) from the dividend, attach it to 79 and continue: 791 / 84

On to step 3:
84 goes into 791 9 times with a remainder of 35.
Record the quotient 9 as the next digit in the result. 
Result so far: 9.0
Deduct 756 from 791 and we're left with 35.
Append the next digit (2) from the dividend to 35 and continue with: 352 / 84

Step 4:
84 goes into 352 4 times with a remainder of 16.
The number 4 becomes the next digit in our result. 
Result so far: 94.0
Subtract 336 from 352 to get 16.
Grab the next digit (3) from the dividend, add it to 16, then carry on: 163 / 84

Going ahead to step 5:
84 goes into 163 1 times with a remainder of 79.
The next digit of our result is 1. 
Result so far: 941.0
The remainder is 79 after subtracting 84 from 163.
Append the next digit (1) from the dividend to 79 and continue with: 791 / 84

Let's proceed to step 6:
84 can be fit into 791 9 times, resulting in a remainder of 35.
The next digit of our result is 9. 
Result so far: 9419.0
If we subtract 756 from 791, we get 35.
Grab the next digit (7) from the dividend, add it to 35, then carry on: 357 / 84

Advancing to step 7:
84 goes into 357 4 times with a remainder of 21.
Put 4 as the next digit of the answer. 
Result so far: 94194.0
Deduct 336 from 357 and we're left with 21.
Take the next digit (7) from the dividend and append it to 21, then repeat: 217 / 84

Advancing to step 8:
84 goes into 217 2 times with a remainder of 49.
The next digit of our result is 2. 
Result so far: 941942.0
If we take 168 away from 217, we end up with 49.
Since there are no more digits in the dividend, we add a zero to the remainder making it 490, and continue the process.

Advancing to step 9:
The number 84 fits into 490 5 times, leaving a remainder of 70.
Record the quotient 5 as the next digit in the result. 
Result so far: 941942.5
Deduct 420 from 490 and we're left with 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

Going ahead to step 10:
The number 84 fits into 700 8 times, leaving a remainder of 28.
Record the quotient 8 as the next digit in the result. 
Result so far: 941942.58
If we take 672 away from 700, we end up with 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Going ahead to step 11:
The number 84 fits into 280 3 times, leaving a remainder of 28.
Write down 3 as next digit of the result. 
Result so far: 941942.583
Deduct 252 from 280 and we're left with 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

On to step 12:
84 goes into 280 3 times with a remainder of 28.
Put 3 as the next digit of the answer. 
Result so far: 941942.5833
If we subtract 252 from 280, we get 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

After the division, we end up with 941942.5833 and a remainder of 0.00028.