A street is 64 meters long. Lanterns are hung on both sides of the street, one at an interval of 8 meters. Both ends of the street must be hung. How many lanterns should be hung in total?
一条街道长64米，在街道两侧挂上灯笼，每隔8米挂一盏，街道两头都要挂上，一共要挂上多少盏灯笼？
<gadget id="calculator">64 / 8</gadget>
<output>8</output>

<gadget id="calculator">8 + 1</gadget>
<output>9</output>

<gadget id="calculator">9 * 2</gadget>
<output>18</output>

<result>18</result>