We're dividing 72451987 by 493 
The aim is to understand the frequency of 493 in 72451987.

On to step 1:
493 can be fit into 7 0 times, resulting in a remainder of 7.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 7 and we're left with 7.
Include the next digit (2) from the dividend after 7, then repeat: 72 / 493

Going ahead to step 2:
If we divide 72 by 493, we get 0 and a remainder of 72.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 72, we get 72.
Take the next digit (4) from the dividend and append it to 72, then repeat: 724 / 493

On to step 3:
493 goes into 724 1 times with a remainder of 231.
Write down 1 as next digit of the result. 
Result so far: 1.0
Subtracting 493 from 724 leaves us with 231.
Fetch the next digit (5) from the dividend, attach it to 231 and continue: 2315 / 493

Let's proceed to step 4:
493 goes into 2315 4 times with a remainder of 343.
Use 4 as the next digit of our solution. 
Result so far: 14.0
Deduct 1972 from 2315 and we're left with 343.
Take the next digit (1) from the dividend and append it to 343, then repeat: 3431 / 493

Moving on to step 5:
493 goes into 3431 6 times with a remainder of 473.
Put 6 as the next digit of the answer. 
Result so far: 146.0
Deduct 2958 from 3431 and we're left with 473.
Bring next digit (9) of the dividend behind the 473 and repeat the process: 4739 / 493

Advancing to step 6:
493 can be fit into 4739 9 times, resulting in a remainder of 302.
Put 9 as the next digit of the answer. 
Result so far: 1469.0
If we take 4437 away from 4739, we end up with 302.
Bring next digit (8) of the dividend behind the 302 and repeat the process: 3028 / 493

On to step 7:
3028 divided by 493 is 6 with a remainder of 70.
Record the quotient 6 as the next digit in the result. 
Result so far: 14696.0
The remainder is 70 after subtracting 2958 from 3028.
Take the next digit (7) from the dividend and append it to 70, then repeat: 707 / 493

On to step 8:
493 goes into 707 1 times with a remainder of 214.
Use 1 as the next digit of our solution. 
Result so far: 146961.0
The remainder is 214 after subtracting 493 from 707.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2140, and continue the process.

Step 9:
When dividing 2140 by 493, we get 4 with a remainder of 168.
Write down 4 as next digit of the result. 
Result so far: 146961.4
If we subtract 1972 from 2140, we get 168.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1680, and continue the process.

On to step 10:
493 can be fit into 1680 3 times, resulting in a remainder of 201.
The number 3 becomes the next digit in our result. 
Result so far: 146961.43
The remainder is 201 after subtracting 1479 from 1680.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2010, and continue the process.

Moving on to step 11:
2010 divided by 493 is 4 with a remainder of 38.
The number 4 becomes the next digit in our result. 
Result so far: 146961.434
If we subtract 1972 from 2010, we get 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Advancing to step 12:
493 goes into 380 0 times with a remainder of 380.
The next digit of our result is 0. 
Result so far: 146961.434
Subtracting 0 from 380 leaves us with 380.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3800, and continue the process.

Let's proceed to step 13:
If we divide 3800 by 493, we get 7 and a remainder of 349.
Put 7 as the next digit of the answer. 
Result so far: 146961.43407
If we subtract 3451 from 3800, we get 349.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3490, and continue the process.

Going ahead to step 14:
493 goes into 3490 7 times with a remainder of 39.
Put 7 as the next digit of the answer. 
Result so far: 146961.434077
The remainder is 39 after subtracting 3451 from 3490.
Since there are no more digits in the dividend, we add a zero to the remainder making it 390, and continue the process.

After the division, we end up with 146961.434077 and a remainder of 3.9e-06.