We look at the division of 81678194 by 524 
The aim is to understand the frequency of 524 in 81678194.

Going ahead to step 1:
8 divided by 524 is 0 with a remainder of 8.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 8 after subtracting 0 from 8.
Grab the next digit (1) from the dividend, add it to 8, then carry on: 81 / 524

Advancing to step 2:
81 divided by 524 is 0 with a remainder of 81.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 81 leaves us with 81.
Include the next digit (6) from the dividend after 81, then repeat: 816 / 524

Advancing to step 3:
816 divided by 524 is 1 with a remainder of 292.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
If we subtract 524 from 816, we get 292.
Append the next digit (7) from the dividend to 292 and continue with: 2927 / 524

Going ahead to step 4:
2927 divided by 524 is 5 with a remainder of 307.
Put 5 as the next digit of the answer. 
Result so far: 15.0
Deduct 2620 from 2927 and we're left with 307.
Take the next digit (8) from the dividend and append it to 307, then repeat: 3078 / 524

Advancing to step 5:
3078 divided by 524 is 5 with a remainder of 458.
Put 5 as the next digit of the answer. 
Result so far: 155.0
If we subtract 2620 from 3078, we get 458.
Append the next digit (1) from the dividend to 458 and continue with: 4581 / 524

Advancing to step 6:
The number 524 fits into 4581 8 times, leaving a remainder of 389.
Write down 8 as next digit of the result. 
Result so far: 1558.0
Subtracting 4192 from 4581 leaves us with 389.
Bring next digit (9) of the dividend behind the 389 and repeat the process: 3899 / 524

Going ahead to step 7:
The number 524 fits into 3899 7 times, leaving a remainder of 231.
The number 7 becomes the next digit in our result. 
Result so far: 15587.0
Subtract 3668 from 3899 to get 231.
Grab the next digit (4) from the dividend, add it to 231, then carry on: 2314 / 524

Moving on to step 8:
If we divide 2314 by 524, we get 4 and a remainder of 218.
The next digit of our result is 4. 
Result so far: 155874.0
Deduct 2096 from 2314 and we're left with 218.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2180, and continue the process.

Going ahead to step 9:
When dividing 2180 by 524, we get 4 with a remainder of 84.
Write down 4 as next digit of the result. 
Result so far: 155874.4
Subtract 2096 from 2180 to get 84.
Since there are no more digits in the dividend, we add a zero to the remainder making it 840, and continue the process.

On to step 10:
The number 524 fits into 840 1 times, leaving a remainder of 316.
The next digit of our result is 1. 
Result so far: 155874.41
If we take 524 away from 840, we end up with 316.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3160, and continue the process.

Moving on to step 11:
When dividing 3160 by 524, we get 6 with a remainder of 16.
Put 6 as the next digit of the answer. 
Result so far: 155874.416
If we subtract 3144 from 3160, we get 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Let's proceed to step 12:
160 divided by 524 is 0 with a remainder of 160.
Use 0 as the next digit of our solution. 
Result so far: 155874.416
Subtract 0 from 160 to get 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1600, and continue the process.

Step 13:
The number 524 fits into 1600 3 times, leaving a remainder of 28.
The number 3 becomes the next digit in our result. 
Result so far: 155874.41603
If we take 1572 away from 1600, 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.

Moving on to step 14:
When dividing 280 by 524, we get 0 with a remainder of 280.
Write down 0 as next digit of the result. 
Result so far: 155874.41603
If we take 0 away from 280, we end up with 280.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2800, and continue the process.

Let's proceed to step 15:
The number 524 fits into 2800 5 times, leaving a remainder of 180.
Write down 5 as next digit of the result. 
Result so far: 155874.4160305
Deduct 2620 from 2800 and we're left with 180.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1800, and continue the process.

Advancing to step 16:
524 can be fit into 1800 3 times, resulting in a remainder of 228.
Write down 3 as next digit of the result. 
Result so far: 155874.41603053
The remainder is 228 after subtracting 1572 from 1800.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2280, and continue the process.

After the division, we end up with 155874.41603053 and a remainder of 2.28e-07.