81975831 divided by 394 
The aim is to understand the frequency of 394 in 81975831.

Advancing to step 1:
The number 394 fits into 8 0 times, leaving a remainder of 8.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 8 after subtracting 0 from 8.
Fetch the next digit (1) from the dividend, attach it to 8 and continue: 81 / 394

On to step 2:
The number 394 fits into 81 0 times, leaving a remainder of 81.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 81, we end up with 81.
Grab the next digit (9) from the dividend, add it to 81, then carry on: 819 / 394

Step 3:
819 divided by 394 is 2 with a remainder of 31.
Record the quotient 2 as the next digit in the result. 
Result so far: 2.0
Subtract 788 from 819 to get 31.
Include the next digit (7) from the dividend after 31, then repeat: 317 / 394

Let's proceed to step 4:
If we divide 317 by 394, we get 0 and a remainder of 317.
Write down 0 as next digit of the result. 
Result so far: 20.0
The remainder is 317 after subtracting 0 from 317.
Grab the next digit (5) from the dividend, add it to 317, then carry on: 3175 / 394

Advancing to step 5:
394 goes into 3175 8 times with a remainder of 23.
Write down 8 as next digit of the result. 
Result so far: 208.0
If we take 3152 away from 3175, we end up with 23.
Bring next digit (8) of the dividend behind the 23 and repeat the process: 238 / 394

Step 6:
394 can be fit into 238 0 times, resulting in a remainder of 238.
Write down 0 as next digit of the result. 
Result so far: 2080.0
The remainder is 238 after subtracting 0 from 238.
Bring next digit (3) of the dividend behind the 238 and repeat the process: 2383 / 394

On to step 7:
394 goes into 2383 6 times with a remainder of 19.
The number 6 becomes the next digit in our result. 
Result so far: 20806.0
If we take 2364 away from 2383, we end up with 19.
Grab the next digit (1) from the dividend, add it to 19, then carry on: 191 / 394

Step 8:
191 divided by 394 is 0 with a remainder of 191.
Use 0 as the next digit of our solution. 
Result so far: 208060.0
Deduct 0 from 191 and we're left with 191.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1910, and continue the process.

Going ahead to step 9:
394 goes into 1910 4 times with a remainder of 334.
Put 4 as the next digit of the answer. 
Result so far: 208060.4
If we take 1576 away from 1910, 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.

Moving on to step 10:
If we divide 3340 by 394, we get 8 and a remainder of 188.
The number 8 becomes the next digit in our result. 
Result so far: 208060.48
The remainder is 188 after subtracting 3152 from 3340.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1880, and continue the process.

On to step 11:
394 can be fit into 1880 4 times, resulting in a remainder of 304.
Use 4 as the next digit of our solution. 
Result so far: 208060.484
If we take 1576 away from 1880, we end up with 304.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3040, and continue the process.

Advancing to step 12:
If we divide 3040 by 394, we get 7 and a remainder of 282.
The next digit of our result is 7. 
Result so far: 208060.4847
If we subtract 2758 from 3040, we get 282.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2820, and continue the process.

Going ahead to step 13:
When dividing 2820 by 394, we get 7 with a remainder of 62.
Use 7 as the next digit of our solution. 
Result so far: 208060.48477
Subtracting 2758 from 2820 leaves us with 62.
Since there are no more digits in the dividend, we add a zero to the remainder making it 620, and continue the process.

Our division results in 208060.48477 with a remaining 6.2e-05.