A, B, and C pay the same amount of money to jointly buy a batch of exercise books. Since A wants 15 less than B and C, and B and C want the same amount, B and C each need to give A 1.5 Yuan. How much is each exercise book?
甲、乙、丙三人出同样多的钱合买一批练习本，由于甲比乙、丙均少要15本，乙、丙要的同样多，这样乙、丙两人各要给甲1.5元．每本练习本多少元？
<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">15 * (2/3)</gadget>
<output>10</output>

<gadget id="calculator">15 - 10</gadget>
<output>5</output>

<gadget id="calculator">1.5 / 5</gadget>
<output>0.3</output>

<result>0.3</result>