There are 27 little white rabbits and 8 little black rabbits in the cage. The number of little gray rabbits is three times the total number of little white rabbits and little black rabbits. How many little gray rabbits are there?
笼子里小白兔有27只，小黑兔有8只，小灰兔的只数是小白兔和小黑兔总数的3倍，小灰兔有多少只？
<gadget id="calculator">27 + 8</gadget>
<output>35</output>

<gadget id="calculator">35 * 3</gadget>
<output>105</output>

<result>105</result>