There are 32 white rabbits and 20 black rabbits, how many more white rabbits than black rabbits? Answer: How many more white rabbits than black rabbits?
白兔有32只、黑兔有20只，白兔比黑兔多多少只？答：白兔比黑兔多多少只．
<gadget id="calculator">32 - 20</gadget>
<output>12</output>

<result>12</result>