6.75−2.75÷[10%×(9.75−414)].

6.75−2.75÷[10%×(9.75−414)].

6.75-2.75÷[10%×(9.75-414)]=6.75-2.75÷[10%×5.5]=6.75-2.75÷0.55=6.75-5=1.75.