Let's divide 99487394 by 210
The aim is to understand the frequency of 210 in 99487394.

Going ahead to step 1:
210 goes into 9 0 times with a remainder of 9.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 9 after subtracting 0 from 9.
Include the next digit (9) from the dividend after 9, then repeat: 99 / 210

Moving on to step 2:
210 can be fit into 99 0 times, resulting in a remainder of 99.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 99, we end up with 99.
Include the next digit (4) from the dividend after 99, then repeat: 994 / 210

Moving on to step 3:
994 divided by 210 is 4 with a remainder of 154.
Write down 4 as next digit of the result. 
Result so far: 4.0
If we take 840 away from 994, we end up with 154.
Include the next digit (8) from the dividend after 154, then repeat: 1548 / 210

Advancing to step 4:
When dividing 1548 by 210, we get 7 with a remainder of 78.
Use 7 as the next digit of our solution. 
Result so far: 47.0
If we take 1470 away from 1548, we end up with 78.
Append the next digit (7) from the dividend to 78 and continue with: 787 / 210

Let's proceed to step 5:
The number 210 fits into 787 3 times, leaving a remainder of 157.
Use 3 as the next digit of our solution. 
Result so far: 473.0
The remainder is 157 after subtracting 630 from 787.
Bring next digit (3) of the dividend behind the 157 and repeat the process: 1573 / 210

Advancing to step 6:
1573 divided by 210 is 7 with a remainder of 103.
The next digit of our result is 7. 
Result so far: 4737.0
Subtracting 1470 from 1573 leaves us with 103.
Include the next digit (9) from the dividend after 103, then repeat: 1039 / 210

Step 7:
When dividing 1039 by 210, we get 4 with a remainder of 199.
Use 4 as the next digit of our solution. 
Result so far: 47374.0
If we subtract 840 from 1039, we get 199.
Take the next digit (4) from the dividend and append it to 199, then repeat: 1994 / 210

Going ahead to step 8:
The number 210 fits into 1994 9 times, leaving a remainder of 104.
Put 9 as the next digit of the answer. 
Result so far: 473749.0
If we subtract 1890 from 1994, we get 104.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1040, and continue the process.

Advancing to step 9:
210 goes into 1040 4 times with a remainder of 200.
The number 4 becomes the next digit in our result. 
Result so far: 473749.4
Subtract 840 from 1040 to get 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2000, and continue the process.

Let's proceed to step 10:
2000 divided by 210 is 9 with a remainder of 110.
Use 9 as the next digit of our solution. 
Result so far: 473749.49
Deduct 1890 from 2000 and we're left 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.

Advancing to step 11:
The number 210 fits into 1100 5 times, leaving a remainder of 50.
Record the quotient 5 as the next digit in the result. 
Result so far: 473749.495
If we take 1050 away from 1100, we end up with 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Going ahead to step 12:
When dividing 500 by 210, we get 2 with a remainder of 80.
Use 2 as the next digit of our solution. 
Result so far: 473749.4952
Subtracting 420 from 500 leaves us 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 13:
The number 210 fits into 800 3 times, leaving a remainder of 170.
Put 3 as the next digit of the answer. 
Result so far: 473749.49523
Subtracting 630 from 800 leaves us with 170.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1700, and continue the process.

Let's proceed to step 14:
If we divide 1700 by 210, we get 8 and a remainder of 20.
Record the quotient 8 as the next digit in the result. 
Result so far: 473749.495238
If we take 1680 away from 1700, we end up with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Advancing to step 15:
If we divide 200 by 210, we get 0 and a remainder of 200.
Write down 0 as next digit of the result. 
Result so far: 473749.495238
Deduct 0 from 200 and we're left with 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2000, and continue the process.

On to step 16:
2000 divided by 210 is 9 with a remainder of 110.
The next digit of our result is 9. 
Result so far: 473749.49523809
If we subtract 1890 from 2000, we get 110.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1100, and continue the process.

In conclusion, the division gives 473749.49523809 with a balance of 1.1e-07.