Xiaohua's father's age is grandpa's (8/15) and Xiaohua's (10/3). If grandpa is 75 years old this year, how old is Xiao Hua?
小华爸爸的年龄是爷爷的(8/15)，是小华的(10/3)．如果爷爷今年75岁，小华今年几岁？
<gadget id="calculator">8 / 15</gadget>
<output>8/15 = around 0.533333</output>

<gadget id="calculator">10 / 3</gadget>
<output>10/3 = around 3.333333</output>

<gadget id="calculator">(8/15) / (10/3)</gadget>
<output>4/25 = around 0.16</output>

<gadget id="calculator">75 * (4/25)</gadget>
<output>12</output>

<result>12</result>