What should come in place of question mark (?) in the following questions?
$$(140+80\times2-24)\div(80+20\times3-40)=?$$
$$(140+80\times2-24) = 140+160-24 = 276$$
$$(80+20\times3-40) = 80+60-40 = 100$$
Therefore, $$(140+80\times2-24)\div(80+20\times3-40) = \dfrac{276}{100} = 2.76$$
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