Chunfeng Restaurant bought 6 boxes of tomatoes and cucumbers each. Tomatoes are 15kg per box and cucumbers are 18kg per box. How many kilograms are the tomatoes and cucumbers together?
春风饭馆买来西红柿和黄瓜各6箱．西红柿每箱15千克，黄瓜每箱18千克．西红柿和黄瓜共多少千克？
<gadget id="calculator">15 * 6</gadget>
<output>90</output>

<gadget id="calculator">18 * 6</gadget>
<output>108</output>

<gadget id="calculator">90 + 108</gadget>
<output>198</output>

<result>198</result>