There are 3 snails, and there are 2 more butterflies than 9 times the number of snails, how many butterflies are there?
有3只蜗牛，蝴蝶的只数比蜗牛的9倍多2只，蝴蝶有多少只？
<gadget id="calculator">9 * 3</gadget>
<output>27</output>

<gadget id="calculator">27 + 2</gadget>
<output>29</output>

<result>29</result>