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 \mathbin\$ b~ equals ~a^2 - b^2~, the equation ~a \mathbin@ b~ equals ~(b \times a) / (2a - 3)~, and the equation ~a \mathbin\# 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~ ~(-1\,000 \le a \le b \le 1\,000)~, 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.