$1.$ Write a main function which will forward four values $(23,45,106,209)$ to a second

function.

$2.$ The second function will find the average of those four numbers and send back to the

main function.

$3.$ The second function will call a third function to add those four numbers.

$4.$ The third function will add those four numbers and return the sum to the second function.

$5.$ The second function will receive the sum from the third function and find the average and

send the average value to the main function.

$6.$ The main function will receive the average value from the second function and multiply

the value by $8$ and store it to s$7$