25187527 divided by 210 
The aim is to understand the frequency of 210 in 25187527.

Let's proceed to step 1:
If we divide 2 by 210, we get 0 and a remainder of 2.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 2 after subtracting 0 from 2.
Grab the next digit (5) from the dividend, add it to 2, then carry on: 25 / 210

Let's proceed to step 2:
210 can be fit into 25 0 times, resulting in a remainder of 25.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 25 and we're left with 25.
Append the next digit (1) from the dividend to 25 and continue with: 251 / 210

Step 3:
When dividing 251 by 210, we get 1 with a remainder of 41.
Write down 1 as next digit of the result. 
Result so far: 1.0
If we take 210 away from 251, we end up with 41.
Append the next digit (8) from the dividend to 41 and continue with: 418 / 210

Moving on to step 4:
When dividing 418 by 210, we get 1 with a remainder of 208.
The number 1 becomes the next digit in our result. 
Result so far: 11.0
If we take 210 away from 418, we end up with 208.
Fetch the next digit (7) from the dividend, attach it to 208 and continue: 2087 / 210

Step 5:
If we divide 2087 by 210, we get 9 and a remainder of 197.
The number 9 becomes the next digit in our result. 
Result so far: 119.0
Subtract 1890 from 2087 to get 197.
Append the next digit (5) from the dividend to 197 and continue with: 1975 / 210

On to step 6:
210 goes into 1975 9 times with a remainder of 85.
Put 9 as the next digit of the answer. 
Result so far: 1199.0
If we subtract 1890 from 1975, we get 85.
Append the next digit (2) from the dividend to 85 and continue with: 852 / 210

Going ahead to step 7:
When dividing 852 by 210, we get 4 with a remainder of 12.
Record the quotient 4 as the next digit in the result. 
Result so far: 11994.0
The remainder is 12 after subtracting 840 from 852.
Grab the next digit (7) from the dividend, add it to 12, then carry on: 127 / 210

Step 8:
If we divide 127 by 210, we get 0 and a remainder of 127.
Use 0 as the next digit of our solution. 
Result so far: 119940.0
If we take 0 away from 127, we end up with 127.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1270, and continue the process.

Let's proceed to step 9:
The number 210 fits into 1270 6 times, leaving a remainder of 10.
Record the quotient 6 as the next digit in the result. 
Result so far: 119940.6
The remainder is 10 after subtracting 1260 from 1270.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Step 10:
When dividing 100 by 210, we get 0 with a remainder of 100.
Record the quotient 0 as the next digit in the result. 
Result so far: 119940.6
If we subtract 0 from 100, we get 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1000, and continue the process.

Going ahead to step 11:
When dividing 1000 by 210, we get 4 with a remainder of 160.
Write down 4 as next digit of the result. 
Result so far: 119940.604
If we subtract 840 from 1000, we get 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1600, and continue the process.

Step 12:
The number 210 fits into 1600 7 times, leaving a remainder of 130.
The next digit of our result is 7. 
Result so far: 119940.6047
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.

Going ahead to step 13:
210 can be fit into 1300 6 times, resulting in a remainder of 40.
The next digit of our result is 6. 
Result so far: 119940.60476
If we take 1260 away from 1300, we end up 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.

Going ahead to step 14:
If we divide 400 by 210, we get 1 and a remainder of 190.
Use 1 as the next digit of our solution. 
Result so far: 119940.604761
If we subtract 210 from 400, we get 190.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1900, and continue the process.

Step 15:
210 goes into 1900 9 times with a remainder of 10.
Use 9 as the next digit of our solution. 
Result so far: 119940.6047619
Deduct 1890 from 1900 and we're left with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Going ahead to step 16:
The number 210 fits into 100 0 times, leaving a remainder of 100.
Put 0 as the next digit of the answer. 
Result so far: 119940.6047619
Subtract 0 from 100 to get 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1000, and continue the process.

Our division results in 119940.6047619 with a remaining 1e-07.