We divide 87013775 by 210
The aim is to understand the frequency of 210 in 87013775.

Step 1:
210 goes into 8 0 times with a remainder of 8.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 8, we get 8.
Append the next digit (7) from the dividend to 8 and continue with: 87 / 210

Going ahead to step 2:
210 goes into 87 0 times with a remainder of 87.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 87, we end up with 87.
Grab the next digit (0) from the dividend, add it to 87, then carry on: 870 / 210

Going ahead to step 3:
870 divided by 210 is 4 with a remainder of 30.
Use 4 as the next digit of our solution. 
Result so far: 4.0
Subtract 840 from 870 to get 30.
Bring next digit (1) of the dividend behind the 30 and repeat the process: 301 / 210

Moving on to step 4:
The number 210 fits into 301 1 times, leaving a remainder of 91.
The number 1 becomes the next digit in our result. 
Result so far: 41.0
Subtract 210 from 301 to get 91.
Fetch the next digit (3) from the dividend, attach it to 91 and continue: 913 / 210

Moving on to step 5:
210 goes into 913 4 times with a remainder of 73.
Record the quotient 4 as the next digit in the result. 
Result so far: 414.0
Subtract 840 from 913 to get 73.
Grab the next digit (7) from the dividend, add it to 73, then carry on: 737 / 210

Step 6:
If we divide 737 by 210, we get 3 and a remainder of 107.
Record the quotient 3 as the next digit in the result. 
Result so far: 4143.0
Subtract 630 from 737 to get 107.
Grab the next digit (7) from the dividend, add it to 107, then carry on: 1077 / 210

On to step 7:
If we divide 1077 by 210, we get 5 and a remainder of 27.
Write down 5 as next digit of the result. 
Result so far: 41435.0
The remainder is 27 after subtracting 1050 from 1077.
Fetch the next digit (5) from the dividend, attach it to 27 and continue: 275 / 210

Moving on to step 8:
If we divide 275 by 210, we get 1 and a remainder of 65.
Write down 1 as next digit of the result. 
Result so far: 414351.0
If we take 210 away from 275, we end up with 65.
Since there are no more digits in the dividend, we add a zero to the remainder making it 650, and continue the process.

Advancing to step 9:
210 can be fit into 650 3 times, resulting in a remainder of 20.
The next digit of our result is 3. 
Result so far: 414351.3
If we take 630 away from 650, 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.

Moving on to step 10:
210 can be fit into 200 0 times, resulting in a remainder of 200.
Use 0 as the next digit of our solution. 
Result so far: 414351.3
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.

Going ahead to step 11:
If we divide 2000 by 210, we get 9 and a remainder of 110.
Put 9 as the next digit of the answer. 
Result so far: 414351.309
Subtract 1890 from 2000 to 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.

Going ahead to step 12:
The number 210 fits into 1100 5 times, leaving a remainder of 50.
Write down 5 as next digit of the result. 
Result so far: 414351.3095
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.

Step 13:
The number 210 fits into 500 2 times, leaving a remainder of 80.
The number 2 becomes the next digit in our result. 
Result so far: 414351.30952
If we take 420 away from 500, we end up 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.

Step 14:
The number 210 fits into 800 3 times, leaving a remainder of 170.
The next digit of our result is 3. 
Result so far: 414351.309523
If we subtract 630 from 800, we get 170.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1700, and continue the process.

Moving on to step 15:
210 can be fit into 1700 8 times, resulting in a remainder of 20.
Write down 8 as next digit of the result. 
Result so far: 414351.3095238
Subtracting 1680 from 1700 leaves us 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.

Step 16:
200 divided by 210 is 0 with a remainder of 200.
Write down 0 as next digit of the result. 
Result so far: 414351.3095238
If we subtract 0 from 200, we 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.

The final outcome is 414351.3095238, with a leftover of 2e-07.