65217871 ÷ 486 
The aim is to understand the frequency of 486 in 65217871.

Step 1:
486 goes into 6 0 times with a remainder of 6.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 6 leaves us with 6.
Grab the next digit (5) from the dividend, add it to 6, then carry on: 65 / 486

Let's proceed to step 2:
If we divide 65 by 486, we get 0 and a remainder of 65.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 65 after subtracting 0 from 65.
Append the next digit (2) from the dividend to 65 and continue with: 652 / 486

On to step 3:
If we divide 652 by 486, we get 1 and a remainder of 166.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Subtracting 486 from 652 leaves us with 166.
Append the next digit (1) from the dividend to 166 and continue with: 1661 / 486

Step 4:
486 goes into 1661 3 times with a remainder of 203.
Record the quotient 3 as the next digit in the result. 
Result so far: 13.0
Deduct 1458 from 1661 and we're left with 203.
Take the next digit (7) from the dividend and append it to 203, then repeat: 2037 / 486

Going ahead to step 5:
If we divide 2037 by 486, we get 4 and a remainder of 93.
Record the quotient 4 as the next digit in the result. 
Result so far: 134.0
Deduct 1944 from 2037 and we're left with 93.
Grab the next digit (8) from the dividend, add it to 93, then carry on: 938 / 486

Let's proceed to step 6:
486 goes into 938 1 times with a remainder of 452.
Use 1 as the next digit of our solution. 
Result so far: 1341.0
If we take 486 away from 938, we end up with 452.
Bring next digit (7) of the dividend behind the 452 and repeat the process: 4527 / 486

Advancing to step 7:
The number 486 fits into 4527 9 times, leaving a remainder of 153.
Record the quotient 9 as the next digit in the result. 
Result so far: 13419.0
Deduct 4374 from 4527 and we're left with 153.
Take the next digit (1) from the dividend and append it to 153, then repeat: 1531 / 486

Step 8:
If we divide 1531 by 486, we get 3 and a remainder of 73.
Record the quotient 3 as the next digit in the result. 
Result so far: 134193.0
The remainder is 73 after subtracting 1458 from 1531.
Since there are no more digits in the dividend, we add a zero to the remainder making it 730, and continue the process.

Moving on to step 9:
486 can be fit into 730 1 times, resulting in a remainder of 244.
Record the quotient 1 as the next digit in the result. 
Result so far: 134193.1
If we take 486 away from 730, we end up with 244.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2440, and continue the process.

Step 10:
486 can be fit into 2440 5 times, resulting in a remainder of 10.
Write down 5 as next digit of the result. 
Result so far: 134193.15
Subtracting 2430 from 2440 leaves us 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.

Moving on to step 11:
486 goes into 100 0 times with a remainder of 100.
Put 0 as the next digit of the answer. 
Result so far: 134193.15
Deduct 0 from 100 and we're left with 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1000, and continue the process.

Step 12:
486 can be fit into 1000 2 times, resulting in a remainder of 28.
Put 2 as the next digit of the answer. 
Result so far: 134193.1502
If we subtract 972 from 1000, we get 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Let's proceed to step 13:
280 divided by 486 is 0 with a remainder of 280.
Write down 0 as next digit of the result. 
Result so far: 134193.1502
Subtract 0 from 280 to get 280.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2800, and continue the process.

Advancing to step 14:
2800 divided by 486 is 5 with a remainder of 370.
Use 5 as the next digit of our solution. 
Result so far: 134193.150205
Subtracting 2430 from 2800 leaves us with 370.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3700, and continue the process.

Advancing to step 15:
If we divide 3700 by 486, we get 7 and a remainder of 298.
The next digit of our result is 7. 
Result so far: 134193.1502057
If we take 3402 away from 3700, we end up with 298.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2980, and continue the process.

Going ahead to step 16:
The number 486 fits into 2980 6 times, leaving a remainder of 64.
The number 6 becomes the next digit in our result. 
Result so far: 134193.15020576
Subtracting 2916 from 2980 leaves us with 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

The final result is 134193.15020576 with a remainder of 6.4e-08.