The body length of a whale is 35 meters, and the head length accounts for 2/5 of the total length. How many meters is the head length of this whale?
一头鲸的体长是35米，头部长占总长的(2/5)，这头鲸的头部长多少米？
<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">35 * (2/5)</gadget>
<output>14</output>

<result>14</result>