The product of number A and 0.6 is 30 less than half of number B, and number B is 240. Find the number A.
甲数与0.6的积比乙数的一半少30，乙数是240，求甲数．
<gadget id="calculator">240 / 2</gadget>
<output>120</output>

<gadget id="calculator">120 - 30</gadget>
<output>90</output>

<gadget id="calculator">90 / 0.6</gadget>
<output>150</output>

<result>150</result>