脱式计算，能简算的要简算，并写出过程．（1）352×871÷339÷435.5×678÷352（2）6.75-2.75÷[10%×（9.75-414）]．

Question

脱式计算，能简算的要简算，并写出过程．
（1）352×871÷339÷435.5×678÷352
（2）6.75-2.75÷[10%×（9.75-4(1)/(4)）]．

Answer 1

（1）352×871÷339÷435.5×678÷352
=352×871×(1)/(339)×(2)/(871)×678×(1)/(352)
=（352×(1)/(352)）×（871×(2)/(871)）×（678×(1)/(339)）
=1×2×2
=4
（2）6.75-2.75÷[10%×（9.75-4(1)/(4)）]
=6.75-2.75÷[10%×5.5]
=6.75-2.75÷0.55
=6.75-5
=1.75．