The price of a set of desks and chairs is 120 yuan, and the ratio of the price of the chairs to the price of the table is 1:3. How much is the price of a table?
一套课桌椅的价格是120元，椅子的价格与桌子的价格的比是1：3，一张桌子的价格是多少元？
<gadget id="calculator">1 + 3</gadget>
<output>4</output>

<gadget id="calculator">120 / 4</gadget>
<output>30</output>

<gadget id="calculator">30 * 3</gadget>
<output>90</output>

<result>90</result>