The fruit wholesale market shipped 3.5 tons of apples and 0.1 tons of pears twice as much as apples. How many tons of pears were shipped?
水果批发市场运来苹果3.5吨，运来的梨比苹果的2倍多0.1吨，运来的梨有多少吨．
<gadget id="calculator">3.5 * 2</gadget>
<output>7</output>

<gadget id="calculator">7 + 0.1</gadget>
<output>7.1</output>

<result>7.1</result>