3.75 times of the number A is equal to 15 times of the number B. Given that the number B is 0.8, what is the number A?
甲数的3.75倍等于乙数的15倍，已知乙数是0.8，甲数是多少．
<gadget id="calculator">15 / 3.75</gadget>
<output>4</output>

<gadget id="calculator">0.8 * 4</gadget>
<output>3.2</output>

<result>3.2</result>