64961889 ÷ 251 
The aim is to understand the frequency of 251 in 64961889.

On to step 1:
When dividing 6 by 251, we get 0 with a remainder of 6.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 6 and we're left with 6.
Bring next digit (4) of the dividend behind the 6 and repeat the process: 64 / 251

Let's proceed to step 2:
251 goes into 64 0 times with a remainder of 64.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 64, we get 64.
Bring next digit (9) of the dividend behind the 64 and repeat the process: 649 / 251

Advancing to step 3:
251 can be fit into 649 2 times, resulting in a remainder of 147.
Record the quotient 2 as the next digit in the result. 
Result so far: 2.0
If we subtract 502 from 649, we get 147.
Bring next digit (6) of the dividend behind the 147 and repeat the process: 1476 / 251

Step 4:
If we divide 1476 by 251, we get 5 and a remainder of 221.
The next digit of our result is 5. 
Result so far: 25.0
If we take 1255 away from 1476, we end up with 221.
Bring next digit (1) of the dividend behind the 221 and repeat the process: 2211 / 251

Going ahead to step 5:
When dividing 2211 by 251, we get 8 with a remainder of 203.
The number 8 becomes the next digit in our result. 
Result so far: 258.0
The remainder is 203 after subtracting 2008 from 2211.
Bring next digit (8) of the dividend behind the 203 and repeat the process: 2038 / 251

On to step 6:
251 goes into 2038 8 times with a remainder of 30.
Put 8 as the next digit of the answer. 
Result so far: 2588.0
Subtracting 2008 from 2038 leaves us with 30.
Take the next digit (8) from the dividend and append it to 30, then repeat: 308 / 251

Advancing to step 7:
The number 251 fits into 308 1 times, leaving a remainder of 57.
Record the quotient 1 as the next digit in the result. 
Result so far: 25881.0
The remainder is 57 after subtracting 251 from 308.
Include the next digit (9) from the dividend after 57, then repeat: 579 / 251

Advancing to step 8:
The number 251 fits into 579 2 times, leaving a remainder of 77.
The next digit of our result is 2. 
Result so far: 258812.0
If we subtract 502 from 579, we get 77.
Since there are no more digits in the dividend, we add a zero to the remainder making it 770, and continue the process.

Step 9:
When dividing 770 by 251, we get 3 with a remainder of 17.
Write down 3 as next digit of the result. 
Result so far: 258812.3
Subtract 753 from 770 to get 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Step 10:
If we divide 170 by 251, we get 0 and a remainder of 170.
Use 0 as the next digit of our solution. 
Result so far: 258812.3
Deduct 0 from 170 and we're left 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.

Step 11:
1700 divided by 251 is 6 with a remainder of 194.
The next digit of our result is 6. 
Result so far: 258812.306
If we take 1506 away from 1700, we end up with 194.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1940, and continue the process.

Going ahead to step 12:
251 goes into 1940 7 times with a remainder of 183.
The next digit of our result is 7. 
Result so far: 258812.3067
The remainder is 183 after subtracting 1757 from 1940.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1830, and continue the process.

Going ahead to step 13:
When dividing 1830 by 251, we get 7 with a remainder of 73.
The number 7 becomes the next digit in our result. 
Result so far: 258812.30677
If we take 1757 away from 1830, we end up with 73.
Since there are no more digits in the dividend, we add a zero to the remainder making it 730, and continue the process.

The final outcome is 258812.30677, with a leftover of 7.3e-05.