A total of 210 kilograms of apples and pears are shipped from a certain market. The ratio of apples to pears is 3:4. If the pears are eaten (2/5), how many kilograms are left?
某市场运来苹果、梨共210千克，苹果和梨的比是3：4，梨吃了(2/5)，还剩多少千克？
<gadget id="calculator">3 + 4</gadget>
<output>7</output>

<gadget id="calculator">4 / 7</gadget>
<output>4/7 = around 0.571429</output>

<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">1 - (2/5)</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">210 * (4/7) * (3/5)</gadget>
<output>72</output>

<result>72</result>