The supermarket shipped 200 bags of potatoes and sweet potatoes, each bag of potatoes weighed 35 kg, and each bag of sweet potatoes weighed 25 kg. How many kilograms do these potatoes and sweet potatoes weigh together?
超市运来土豆和地瓜各200袋，每袋土豆重35千克，每袋地瓜重25千克．这些土豆和地瓜共重多少千克？
<gadget id="calculator">35 * 200</gadget>
<output>7_000</output>

<gadget id="calculator">25 * 200</gadget>
<output>5_000</output>

<gadget id="calculator">7_000 + 5_000</gadget>
<output>12_000</output>

<result>12_000</result>