Each box of oranges weighs 50 kg, and each box of bananas weighs 90 kg. What is the total weight of 12 boxes of oranges and 15 boxes of bananas?
橘子每箱重50千克，香蕉每箱重90千克．12箱橘子和15箱香蕉一共重多少千克．
<gadget id="calculator">12 * 50</gadget>
<output>600</output>

<gadget id="calculator">15 * 90</gadget>
<output>1_350</output>

<gadget id="calculator">600 + 1_350</gadget>
<output>1_950</output>

<result>1_950</result>