We look at the division of 75722493 by 486 
The aim is to understand the frequency of 486 in 75722493.

Going ahead to step 1:
If we divide 7 by 486, we get 0 and a remainder of 7.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 7, we end up with 7.
Include the next digit (5) from the dividend after 7, then repeat: 75 / 486

Going ahead to step 2:
If we divide 75 by 486, we get 0 and a remainder of 75.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 75, we get 75.
Include the next digit (7) from the dividend after 75, then repeat: 757 / 486

Advancing to step 3:
486 goes into 757 1 times with a remainder of 271.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Deduct 486 from 757 and we're left with 271.
Append the next digit (2) from the dividend to 271 and continue with: 2712 / 486

Step 4:
486 goes into 2712 5 times with a remainder of 282.
Put 5 as the next digit of the answer. 
Result so far: 15.0
Deduct 2430 from 2712 and we're left with 282.
Append the next digit (2) from the dividend to 282 and continue with: 2822 / 486

Moving on to step 5:
The number 486 fits into 2822 5 times, leaving a remainder of 392.
Use 5 as the next digit of our solution. 
Result so far: 155.0
Subtracting 2430 from 2822 leaves us with 392.
Include the next digit (4) from the dividend after 392, then repeat: 3924 / 486

Going ahead to step 6:
If we divide 3924 by 486, we get 8 and a remainder of 36.
Write down 8 as next digit of the result. 
Result so far: 1558.0
Deduct 3888 from 3924 and we're left with 36.
Take the next digit (9) from the dividend and append it to 36, then repeat: 369 / 486

On to step 7:
The number 486 fits into 369 0 times, leaving a remainder of 369.
Record the quotient 0 as the next digit in the result. 
Result so far: 15580.0
Subtracting 0 from 369 leaves us with 369.
Fetch the next digit (3) from the dividend, attach it to 369 and continue: 3693 / 486

Moving on to step 8:
When dividing 3693 by 486, we get 7 with a remainder of 291.
Put 7 as the next digit of the answer. 
Result so far: 155807.0
Deduct 3402 from 3693 and we're left with 291.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2910, and continue the process.

Advancing to step 9:
486 can be fit into 2910 5 times, resulting in a remainder of 480.
Put 5 as the next digit of the answer. 
Result so far: 155807.5
If we take 2430 away from 2910, we end up with 480.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4800, and continue the process.

On to step 10:
The number 486 fits into 4800 9 times, leaving a remainder of 426.
Use 9 as the next digit of our solution. 
Result so far: 155807.59
If we subtract 4374 from 4800, we get 426.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4260, and continue the process.

Moving on to step 11:
4260 divided by 486 is 8 with a remainder of 372.
Write down 8 as next digit of the result. 
Result so far: 155807.598
If we take 3888 away from 4260, we end up with 372.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3720, and continue the process.

Let's proceed to step 12:
If we divide 3720 by 486, we get 7 and a remainder of 318.
The next digit of our result is 7. 
Result so far: 155807.5987
If we take 3402 away from 3720, we end up with 318.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3180, and continue the process.

Let's proceed to step 13:
486 goes into 3180 6 times with a remainder of 264.
The number 6 becomes the next digit in our result. 
Result so far: 155807.59876
If we take 2916 away from 3180, we end up with 264.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2640, and continue the process.

Moving on to step 14:
486 goes into 2640 5 times with a remainder of 210.
Write down 5 as next digit of the result. 
Result so far: 155807.598765
If we take 2430 away from 2640, we end up with 210.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2100, and continue the process.

Let's proceed to step 15:
486 can be fit into 2100 4 times, resulting in a remainder of 156.
Write down 4 as next digit of the result. 
Result so far: 155807.5987654
If we subtract 1944 from 2100, we get 156.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1560, and continue the process.

Advancing to step 16:
The number 486 fits into 1560 3 times, leaving a remainder of 102.
Record the quotient 3 as the next digit in the result. 
Result so far: 155807.59876543
The remainder is 102 after subtracting 1458 from 1560.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1020, and continue the process.

The final result is 155807.59876543 with a remainder of 1.02e-07.