There are 10 baskets of tomatoes, each weighing 50 kilograms, 6 baskets are sold in the morning, and half of the baskets are sold in the afternoon, how many kilograms are left?
西红柿有10筐，每筐50千克，上午卖出6筐，下午卖出半筐，还剩多少千克？
<gadget id="calculator">10 - 6 - 0.5</gadget>
<output>3.5</output>

<gadget id="calculator">50 * 3.5</gadget>
<output>175</output>

<result>175</result>