Xiaohong has 64 sheets of paper. It takes 27 sheets to make paper flowers and 19 sheets to make paper boats. How many sheets of paper does Xiaohong have left?
小红有64张纸．做纸花用去27张，做纸船用去19张．小红还剩多少张纸？
<gadget id="calculator">64 - 27 - 19</gadget>
<output>18</output>

<result>18</result>