A basket of apples weighs 70 kilograms. They ate (1/5) on the first day, among which (1/7) was eaten by Xiao Ming and Xiao Lin. How many kilograms of apples did Xiao Ming and Xiao Lin eat together on the first day?
一筐苹果重70千克，第一天吃了(1/5)，其中的(1/7)是小明和小林吃的，第一天小明和小林共吃了多少千克的苹果？
<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>1/35 = around 0.028571</output>

<gadget id="calculator">70 * (1/35)</gadget>
<output>2</output>

<result>2</result>