The grain depot transports a batch of flour and rice, of which rice accounts for 40% of the total, and the rice is 720 kilograms less than the flour. How many kilograms of rice and flour are transported in total?
粮库运进一批面粉和大米，其中大米占总量的40%，大米比面粉少720千克，共运进大米和面粉多少千克？
<gadget id="calculator">40 / 100</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">1 - (2/5) - (2/5)</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">720 / (1/5)</gadget>
<output>3_600</output>

<result>3_600</result>