A person uses a horse-drawn cart to transport rice from A to B. The heavy truck with rice travels 60 kilometers a day, and the empty cart travels 90 kilometers a day when returning. It travels back and forth three times in 5 days. How many kilometers are there in A and B?
一个人用马车运米，从甲地到乙地，装米的重车日行60千米，返回时空车日行90千米，5日行返三次，甲乙两地有多少千米．
<gadget id="calculator">5 / 3</gadget>
<output>5/3 = around 1.666667</output>

<gadget id="calculator">90 * (5/3)</gadget>
<output>150</output>

<gadget id="calculator">60 + 90</gadget>
<output>150</output>

<gadget id="calculator">150 / 150</gadget>
<output>1</output>

<gadget id="calculator">60 * 1</gadget>
<output>60</output>

<result>60</result>