16 \(\times\) 12\(^2\) \(-\) ( 4 \(\times\) 23\(^2\) \(-\) 509 \(\times\) 4 )
= \(16\times144-\left(4\times529-509\times4\right)\)
= \(16\times144-\left(2116-2036\right)\)
= \(16\times144-80\)
= \(2304-80\)
= \(2224\)
164 \(\times\) 93 \(+\) 82 \(\times\) 106 \(-\) 41 \(\times\) 184
= \(15252+8692-7544\)
= \(23944-7544\)
= \(16400\)