We look at the division of 68453851 by 493 
The aim is to understand the frequency of 493 in 68453851.

Step 1:
493 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
The remainder is 6 after subtracting 0 from 6.
Bring next digit (8) of the dividend behind the 6 and repeat the process: 68 / 493

On to step 2:
493 goes into 68 0 times with a remainder of 68.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 68, we get 68.
Append the next digit (4) from the dividend to 68 and continue with: 684 / 493

Going ahead to step 3:
The number 493 fits into 684 1 times, leaving a remainder of 191.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Deduct 493 from 684 and we're left with 191.
Take the next digit (5) from the dividend and append it to 191, then repeat: 1915 / 493

Step 4:
493 goes into 1915 3 times with a remainder of 436.
Write down 3 as next digit of the result. 
Result so far: 13.0
Subtract 1479 from 1915 to get 436.
Include the next digit (3) from the dividend after 436, then repeat: 4363 / 493

Step 5:
If we divide 4363 by 493, we get 8 and a remainder of 419.
The number 8 becomes the next digit in our result. 
Result so far: 138.0
Deduct 3944 from 4363 and we're left with 419.
Include the next digit (8) from the dividend after 419, then repeat: 4198 / 493

Going ahead to step 6:
493 goes into 4198 8 times with a remainder of 254.
Record the quotient 8 as the next digit in the result. 
Result so far: 1388.0
If we take 3944 away from 4198, we end up with 254.
Fetch the next digit (5) from the dividend, attach it to 254 and continue: 2545 / 493

On to step 7:
If we divide 2545 by 493, we get 5 and a remainder of 80.
Write down 5 as next digit of the result. 
Result so far: 13885.0
If we subtract 2465 from 2545, we get 80.
Take the next digit (1) from the dividend and append it to 80, then repeat: 801 / 493

On to step 8:
If we divide 801 by 493, we get 1 and a remainder of 308.
Record the quotient 1 as the next digit in the result. 
Result so far: 138851.0
If we take 493 away from 801, we end up with 308.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3080, and continue the process.

Let's proceed to step 9:
493 can be fit into 3080 6 times, resulting in a remainder of 122.
Put 6 as the next digit of the answer. 
Result so far: 138851.6
If we take 2958 away from 3080, we end up with 122.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1220, and continue the process.

Advancing to step 10:
When dividing 1220 by 493, we get 2 with a remainder of 234.
Write down 2 as next digit of the result. 
Result so far: 138851.62
If we take 986 away from 1220, we end up with 234.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2340, and continue the process.

Moving on to step 11:
2340 divided by 493 is 4 with a remainder of 368.
The next digit of our result is 4. 
Result so far: 138851.624
If we subtract 1972 from 2340, we get 368.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3680, and continue the process.

On to step 12:
493 goes into 3680 7 times with a remainder of 229.
Record the quotient 7 as the next digit in the result. 
Result so far: 138851.6247
If we take 3451 away from 3680, we end up with 229.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2290, and continue the process.

Going ahead to step 13:
If we divide 2290 by 493, we get 4 and a remainder of 318.
Record the quotient 4 as the next digit in the result. 
Result so far: 138851.62474
Deduct 1972 from 2290 and we're left 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.

Advancing to step 14:
If we divide 3180 by 493, we get 6 and a remainder of 222.
The next digit of our result is 6. 
Result so far: 138851.624746
Subtract 2958 from 3180 to get 222.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2220, and continue the process.

Advancing to step 15:
2220 divided by 493 is 4 with a remainder of 248.
Record the quotient 4 as the next digit in the result. 
Result so far: 138851.6247464
Subtract 1972 from 2220 to get 248.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2480, and continue the process.

Step 16:
If we divide 2480 by 493, we get 5 and a remainder of 15.
Record the quotient 5 as the next digit in the result. 
Result so far: 138851.62474645
If we take 2465 away from 2480, we end up with 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

The quotient of the division is 138851.62474645, and the remainder is 1.5e-08.