Xiaojun's grandfather raised 80 rabbits, 25% of which were black rabbits, and the rest were white rabbits. How many white rabbits did Xiaojun's grandfather raise?
小军的爷爷养了80只兔子，其中25%是黑兔，其余的是白兔，小军的爷爷养了多少只白兔．
<gadget id="calculator">25 / 100</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">1 - (1/4)</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">80 * (3/4)</gadget>
<output>60</output>

<result>60</result>