89447707 divided by 210 
The aim is to understand the frequency of 210 in 89447707.

Step 1:
When dividing 8 by 210, we get 0 with a remainder of 8.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 8 to get 8.
Take the next digit (9) from the dividend and append it to 8, then repeat: 89 / 210

Going ahead to step 2:
The number 210 fits into 89 0 times, leaving a remainder of 89.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 89 to get 89.
Take the next digit (4) from the dividend and append it to 89, then repeat: 894 / 210

On to step 3:
894 divided by 210 is 4 with a remainder of 54.
Record the quotient 4 as the next digit in the result. 
Result so far: 4.0
Subtract 840 from 894 to get 54.
Bring next digit (4) of the dividend behind the 54 and repeat the process: 544 / 210

On to step 4:
210 can be fit into 544 2 times, resulting in a remainder of 124.
Record the quotient 2 as the next digit in the result. 
Result so far: 42.0
If we subtract 420 from 544, we get 124.
Fetch the next digit (7) from the dividend, attach it to 124 and continue: 1247 / 210

Step 5:
1247 divided by 210 is 5 with a remainder of 197.
Record the quotient 5 as the next digit in the result. 
Result so far: 425.0
If we subtract 1050 from 1247, we get 197.
Bring next digit (7) of the dividend behind the 197 and repeat the process: 1977 / 210

Advancing to step 6:
The number 210 fits into 1977 9 times, leaving a remainder of 87.
The next digit of our result is 9. 
Result so far: 4259.0
Deduct 1890 from 1977 and we're left with 87.
Append the next digit (0) from the dividend to 87 and continue with: 870 / 210

Step 7:
When dividing 870 by 210, we get 4 with a remainder of 30.
The next digit of our result is 4. 
Result so far: 42594.0
Subtract 840 from 870 to get 30.
Bring next digit (7) of the dividend behind the 30 and repeat the process: 307 / 210

On to step 8:
If we divide 307 by 210, we get 1 and a remainder of 97.
The number 1 becomes the next digit in our result. 
Result so far: 425941.0
Deduct 210 from 307 and we're left with 97.
Since there are no more digits in the dividend, we add a zero to the remainder making it 970, and continue the process.

On to step 9:
210 goes into 970 4 times with a remainder of 130.
Put 4 as the next digit of the answer. 
Result so far: 425941.4
Subtracting 840 from 970 leaves us with 130.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1300, and continue the process.

Advancing to step 10:
210 can be fit into 1300 6 times, resulting in a remainder of 40.
Write down 6 as next digit of the result. 
Result so far: 425941.46
Deduct 1260 from 1300 and we're left with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Moving on to step 11:
210 can be fit into 400 1 times, resulting in a remainder of 190.
The number 1 becomes the next digit in our result. 
Result so far: 425941.461
The remainder is 190 after subtracting 210 from 400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1900, and continue the process.

Advancing to step 12:
If we divide 1900 by 210, we get 9 and a remainder of 10.
Use 9 as the next digit of our solution. 
Result so far: 425941.4619
The remainder is 10 after subtracting 1890 from 1900.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

On to step 13:
210 can be fit into 100 0 times, resulting in a remainder of 100.
Record the quotient 0 as the next digit in the result. 
Result so far: 425941.4619
The remainder is 100 after subtracting 0 from 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1000, and continue the process.

Moving on to step 14:
The number 210 fits into 1000 4 times, leaving a remainder of 160.
Use 4 as the next digit of our solution. 
Result so far: 425941.461904
Deduct 840 from 1000 and we're left with 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1600, and continue the process.

On to step 15:
The number 210 fits into 1600 7 times, leaving a remainder of 130.
The next digit of our result is 7. 
Result so far: 425941.4619047
Deduct 1470 from 1600 and we're left with 130.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1300, and continue the process.

Let's proceed to step 16:
1300 divided by 210 is 6 with a remainder of 40.
Write down 6 as next digit of the result. 
Result so far: 425941.46190476
The remainder is 40 after subtracting 1260 from 1300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

The final result is 425941.46190476 with a remainder of 4e-08.