The lifespan of a walrus is about 40 years, which is longer (1/3) than that of a sea lion. How many years is the lifespan of a sea lion?
海象的寿命大约是40年，比海狮的寿命长(1/3)，海狮的寿命大约是多少年？
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">1 + (1/3)</gadget>
<output>4/3 = around 1.333333</output>

<gadget id="calculator">40 / (4/3)</gadget>
<output>30</output>

<result>30</result>