Diagnostic Test 2016 Level 1

The members of team starfax learned math in an unconventional way such that they were unable to use calculators. Instead of addition, subtraction, multiplication, and division, with the numbers $a$ and $b$, the equation $a\mathrm{\$}b$ equals $a^2-b^2$, the equation $a@b$ equals $(b\times a)/(2a-3)$, and the equation $a\mathrm{\#}b$ equals $(a\times b)(b-14)$. Due to this being so hard without calculators, the students requested you to make a program for them. Given the integers $a$ and $b$ $(-1000\le a\le b\le 1000)$, and an operand $o$ ($, @, or #), calculate the answer to the provided question. Output the string The equation [a] [o] [b] is equal to [answer]. The answer will always be an integer after calculations.

Sample Input 1

3
$
7

Sample Output 1

The equation 3 $ 7 is equal to -40.

Sample Input 2

4
#
0

Sample Output 2

The equation 4 # 0 is equal to 0.