The operator $\bigtriangleup$ acts on two numbers to give the following outcomes: 
\[3 \bigtriangleup 2 = 12\]
\[4 \bigtriangleup 5 = 40\]
\[5 \bigtriangleup 9 = 90\]
\[6 \bigtriangleup 1 = 12\]
What is \(2 \bigtriangleup 7\) equal to? Let's think step by step and output the final answer within \boxed{}.
user