负一又二分之一÷四分之三(-0.2)×一又四分之三÷1.4×(负五分之三)
=-3/2÷3/4×(-1/5)×7/4÷7/5×(-3/5)
=-3/2×4/3×1/5×7/4×5/7×3/5
=-3/10