利用结合法,,先12除以3等于4,,再360除以4等于90360÷(12×3)=360÷36=12
360÷12÷3=360÷3÷12=120÷12=10360÷(12×3)=360÷36=12
360÷12÷3=360×1∕12×1∕3=360×1∕36=360∕36=10
360/(12*3)=360/36=10