Dad bought a watermelon weighing 2000 grams, and bought 5 pears, each weighing 200 grams. How many kilograms does the watermelon and pear weigh together?
爸爸买了一个西瓜，重2000克，又买了5个梨，每个梨重200克．西瓜和梨一共重多少千克？
<gadget id="calculator">5 * 200</gadget>
<output>1_000</output>

<gadget id="calculator">1_000 + 2_000</gadget>
<output>3_000</output>

<gadget id="calculator">3_000 / 1_000</gadget>
<output>3</output>

<result>3</result>