The student cafeteria bought 600 kilograms of flour and 45 kilograms of rice, which was three times the weight of the flour. How many kilograms of grain were bought in total?
学生食堂买来面粉600千克，买大米的重量比面粉的3倍还多45千克，共买粮食多少千克？
<gadget id="calculator">600 * 3</gadget>
<output>1_800</output>

<gadget id="calculator">1_800 + 45 + 600</gadget>
<output>2_445</output>

<result>2_445</result>