79765391 ÷ 522 
The aim is to understand the frequency of 522 in 79765391.

Step 1:
7 divided by 522 is 0 with a remainder of 7.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 7, we get 7.
Grab the next digit (9) from the dividend, add it to 7, then carry on: 79 / 522

Let's proceed to step 2:
When dividing 79 by 522, we get 0 with a remainder of 79.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 79, we end up with 79.
Take the next digit (7) from the dividend and append it to 79, then repeat: 797 / 522

On to step 3:
522 goes into 797 1 times with a remainder of 275.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Subtracting 522 from 797 leaves us with 275.
Include the next digit (6) from the dividend after 275, then repeat: 2756 / 522

Advancing to step 4:
2756 divided by 522 is 5 with a remainder of 146.
The next digit of our result is 5. 
Result so far: 15.0
Subtracting 2610 from 2756 leaves us with 146.
Append the next digit (5) from the dividend to 146 and continue with: 1465 / 522

Going ahead to step 5:
522 goes into 1465 2 times with a remainder of 421.
Use 2 as the next digit of our solution. 
Result so far: 152.0
If we take 1044 away from 1465, we end up with 421.
Append the next digit (3) from the dividend to 421 and continue with: 4213 / 522

On to step 6:
522 can be fit into 4213 8 times, resulting in a remainder of 37.
Write down 8 as next digit of the result. 
Result so far: 1528.0
The remainder is 37 after subtracting 4176 from 4213.
Bring next digit (9) of the dividend behind the 37 and repeat the process: 379 / 522

Let's proceed to step 7:
The number 522 fits into 379 0 times, leaving a remainder of 379.
Put 0 as the next digit of the answer. 
Result so far: 15280.0
The remainder is 379 after subtracting 0 from 379.
Append the next digit (1) from the dividend to 379 and continue with: 3791 / 522

Going ahead to step 8:
If we divide 3791 by 522, we get 7 and a remainder of 137.
Write down 7 as next digit of the result. 
Result so far: 152807.0
If we take 3654 away from 3791, we end up with 137.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1370, and continue the process.

Moving on to step 9:
If we divide 1370 by 522, we get 2 and a remainder of 326.
The next digit of our result is 2. 
Result so far: 152807.2
Subtracting 1044 from 1370 leaves us with 326.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3260, and continue the process.

Going ahead to step 10:
When dividing 3260 by 522, we get 6 with a remainder of 128.
Put 6 as the next digit of the answer. 
Result so far: 152807.26
The remainder is 128 after subtracting 3132 from 3260.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1280, and continue the process.

Moving on to step 11:
When dividing 1280 by 522, we get 2 with a remainder of 236.
The number 2 becomes the next digit in our result. 
Result so far: 152807.262
The remainder is 236 after subtracting 1044 from 1280.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2360, and continue the process.

Advancing to step 12:
522 can be fit into 2360 4 times, resulting in a remainder of 272.
Put 4 as the next digit of the answer. 
Result so far: 152807.2624
Deduct 2088 from 2360 and we're left with 272.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2720, and continue the process.

Advancing to step 13:
When dividing 2720 by 522, we get 5 with a remainder of 110.
Put 5 as the next digit of the answer. 
Result so far: 152807.26245
If we take 2610 away from 2720, we end up with 110.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1100, and continue the process.

On to step 14:
522 goes into 1100 2 times with a remainder of 56.
Write down 2 as next digit of the result. 
Result so far: 152807.262452
If we subtract 1044 from 1100, we get 56.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

On to step 15:
If we divide 560 by 522, we get 1 and a remainder of 38.
The number 1 becomes the next digit in our result. 
Result so far: 152807.2624521
Deduct 522 from 560 and we're left with 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Let's proceed to step 16:
When dividing 380 by 522, we get 0 with a remainder of 380.
Put 0 as the next digit of the answer. 
Result so far: 152807.2624521
If we subtract 0 from 380, we get 380.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3800, and continue the process.

Our division results in 152807.2624521 with a remaining 3.8e-07.