We're dividing 1921194 by 210 
The aim is to understand the frequency of 210 in 1921194.

Step 1:
1 divided by 210 is 0 with a remainder of 1.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 1 leaves us with 1.
Bring next digit (9) of the dividend behind the 1 and repeat the process: 19 / 210

Going ahead to step 2:
The number 210 fits into 19 0 times, leaving a remainder of 19.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 19, we get 19.
Take the next digit (2) from the dividend and append it to 19, then repeat: 192 / 210

Let's proceed to step 3:
192 divided by 210 is 0 with a remainder of 192.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 192, we get 192.
Append the next digit (1) from the dividend to 192 and continue with: 1921 / 210

Moving on to step 4:
When dividing 1921 by 210, we get 9 with a remainder of 31.
Record the quotient 9 as the next digit in the result. 
Result so far: 9.0
The remainder is 31 after subtracting 1890 from 1921.
Append the next digit (1) from the dividend to 31 and continue with: 311 / 210

Advancing to step 5:
311 divided by 210 is 1 with a remainder of 101.
Record the quotient 1 as the next digit in the result. 
Result so far: 91.0
If we take 210 away from 311, we end up with 101.
Take the next digit (9) from the dividend and append it to 101, then repeat: 1019 / 210

Going ahead to step 6:
210 can be fit into 1019 4 times, resulting in a remainder of 179.
Record the quotient 4 as the next digit in the result. 
Result so far: 914.0
Subtracting 840 from 1019 leaves us with 179.
Grab the next digit (4) from the dividend, add it to 179, then carry on: 1794 / 210

Going ahead to step 7:
The number 210 fits into 1794 8 times, leaving a remainder of 114.
Put 8 as the next digit of the answer. 
Result so far: 9148.0
If we subtract 1680 from 1794, we get 114.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1140, and continue the process.

Advancing to step 8:
The number 210 fits into 1140 5 times, leaving a remainder of 90.
Record the quotient 5 as the next digit in the result. 
Result so far: 9148.5
If we take 1050 away from 1140, we end up with 90.
Since there are no more digits in the dividend, we add a zero to the remainder making it 900, and continue the process.

Let's proceed to step 9:
If we divide 900 by 210, we get 4 and a remainder of 60.
Record the quotient 4 as the next digit in the result. 
Result so far: 9148.54
If we take 840 away from 900, we end up with 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Going ahead to step 10:
The number 210 fits into 600 2 times, leaving a remainder of 180.
Write down 2 as next digit of the result. 
Result so far: 9148.542
Deduct 420 from 600 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.

On to step 11:
The number 210 fits into 1800 8 times, leaving a remainder of 120.
Put 8 as the next digit of the answer. 
Result so far: 9148.5428
Subtract 1680 from 1800 to get 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1200, and continue the process.

On to step 12:
If we divide 1200 by 210, we get 5 and a remainder of 150.
Write down 5 as next digit of the result. 
Result so far: 9148.54285
Subtracting 1050 from 1200 leaves us with 150.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1500, and continue the process.

Step 13:
210 can be fit into 1500 7 times, resulting in a remainder of 30.
The number 7 becomes the next digit in our result. 
Result so far: 9148.542857
If we take 1470 away from 1500, we end up with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

On to step 14:
If we divide 300 by 210, we get 1 and a remainder of 90.
Put 1 as the next digit of the answer. 
Result so far: 9148.5428571
If we subtract 210 from 300, we get 90.
Since there are no more digits in the dividend, we add a zero to the remainder making it 900, and continue the process.

Advancing to step 15:
If we divide 900 by 210, we get 4 and a remainder of 60.
The next digit of our result is 4. 
Result so far: 9148.54285714
If we subtract 840 from 900, we get 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

The final result is 9148.54285714 with a remainder of 6e-08.