180kg of flour from the cafeteria is 20kg less than that of rice (4/5). How many kilograms of flour and rice are shipped from the cafeteria (use the equation to solve it)?
食堂运来面粉180kg，比大米的(4/5)少20kg，食堂运来面粉和大米共多少千克(用方程解)？
<gadget id="calculator">20 + 180</gadget>
<output>200</output>

<gadget id="calculator">4 / 5</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">200 / (4/5)</gadget>
<output>250</output>

<gadget id="calculator">250 + 180</gadget>
<output>430</output>

<result>430</result>