The school cafeteria shipped 350 kg of cabbage. Use (1/5) on the first day and (1/7) on the second day. How many kilograms are used in two days?
学校食堂运进350千克白菜．第一天用去(1/5)，第二天用去(1/7)．两天一共用去多少千克？
<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1 / 7</gadget>
<output>1/7 = around 0.142857</output>

<gadget id="calculator">(1/5) + (1/7)</gadget>
<output>12/35 = around 0.342857</output>

<gadget id="calculator">350 * (12/35)</gadget>
<output>120</output>

<result>120</result>