We look at the division of 80521395 by 712 
The aim is to understand the frequency of 712 in 80521395.

Advancing to step 1:
The number 712 fits into 8 0 times, leaving a remainder of 8.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 8 and we're left with 8.
Bring next digit (0) of the dividend behind the 8 and repeat the process: 80 / 712

Let's proceed to step 2:
712 can be fit into 80 0 times, resulting in a remainder of 80.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 80, we end up with 80.
Bring next digit (5) of the dividend behind the 80 and repeat the process: 805 / 712

Let's proceed to step 3:
712 can be fit into 805 1 times, resulting in a remainder of 93.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Deduct 712 from 805 and we're left with 93.
Bring next digit (2) of the dividend behind the 93 and repeat the process: 932 / 712

Going ahead to step 4:
712 can be fit into 932 1 times, resulting in a remainder of 220.
Put 1 as the next digit of the answer. 
Result so far: 11.0
If we take 712 away from 932, we end up with 220.
Append the next digit (1) from the dividend to 220 and continue with: 2201 / 712

Going ahead to step 5:
The number 712 fits into 2201 3 times, leaving a remainder of 65.
Put 3 as the next digit of the answer. 
Result so far: 113.0
If we subtract 2136 from 2201, we get 65.
Bring next digit (3) of the dividend behind the 65 and repeat the process: 653 / 712

Step 6:
653 divided by 712 is 0 with a remainder of 653.
Put 0 as the next digit of the answer. 
Result so far: 1130.0
Subtracting 0 from 653 leaves us with 653.
Grab the next digit (9) from the dividend, add it to 653, then carry on: 6539 / 712

Advancing to step 7:
712 can be fit into 6539 9 times, resulting in a remainder of 131.
Put 9 as the next digit of the answer. 
Result so far: 11309.0
Subtract 6408 from 6539 to get 131.
Take the next digit (5) from the dividend and append it to 131, then repeat: 1315 / 712

On to step 8:
When dividing 1315 by 712, we get 1 with a remainder of 603.
The number 1 becomes the next digit in our result. 
Result so far: 113091.0
If we take 712 away from 1315, we end up with 603.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6030, and continue the process.

Going ahead to step 9:
If we divide 6030 by 712, we get 8 and a remainder of 334.
Write down 8 as next digit of the result. 
Result so far: 113091.8
If we take 5696 away from 6030, we end up with 334.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3340, and continue the process.

Let's proceed to step 10:
When dividing 3340 by 712, we get 4 with a remainder of 492.
Write down 4 as next digit of the result. 
Result so far: 113091.84
Subtract 2848 from 3340 to get 492.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4920, and continue the process.

Going ahead to step 11:
When dividing 4920 by 712, we get 6 with a remainder of 648.
The next digit of our result is 6. 
Result so far: 113091.846
The remainder is 648 after subtracting 4272 from 4920.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6480, and continue the process.

On to step 12:
712 can be fit into 6480 9 times, resulting in a remainder of 72.
The next digit of our result is 9. 
Result so far: 113091.8469
If we subtract 6408 from 6480, we get 72.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

Step 13:
712 goes into 720 1 times with a remainder of 8.
Use 1 as the next digit of our solution. 
Result so far: 113091.84691
If we subtract 712 from 720, we get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Going ahead to step 14:
80 divided by 712 is 0 with a remainder of 80.
The number 0 becomes the next digit in our result. 
Result so far: 113091.84691
Deduct 0 from 80 and we're left with 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Advancing to step 15:
712 goes into 800 1 times with a remainder of 88.
Put 1 as the next digit of the answer. 
Result so far: 113091.8469101
Subtracting 712 from 800 leaves us with 88.
Since there are no more digits in the dividend, we add a zero to the remainder making it 880, and continue the process.

Step 16:
When dividing 880 by 712, we get 1 with a remainder of 168.
The number 1 becomes the next digit in our result. 
Result so far: 113091.84691011
Subtracting 712 from 880 leaves us with 168.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1680, and continue the process.

In conclusion, the division gives 113091.84691011 with a balance of 1.68e-07.