Among the invertebrates, the squid swims the fastest. Its maximum speed is about (9/10) km per minute. The speed of dolphins is (5/6) that of squids. How many kilometers per minute can dolphins swim?
无脊椎动物中游泳速度最快的是乌贼，它的最高速度每分钟约是(9/10)km，海豚的速度是乌贼的(5/6)，海豚每分钟能游多少千米？
<gadget id="calculator">9 / 10</gadget>
<output>9/10 = around 0.9</output>

<gadget id="calculator">5 / 6</gadget>
<output>5/6 = around 0.833333</output>

<gadget id="calculator">(9/10) * (5/6)</gadget>
<output>3/4 = around 0.75</output>

<result>3/4 = around 0.75</result>