Li Hong participated in the mathematics ability test, and there were 150 questions in total. Li Hong only got 98% correct. How many questions did Li Hong get wrong?
李红参加数学能力测试，共有150道题，李红只做对了98%，李红做错了多少道题？
<gadget id="calculator">98 / 100</gadget>
<output>49/50 = around 0.98</output>

<gadget id="calculator">1 - (49/50)</gadget>
<output>1/50 = around 0.02</output>

<gadget id="calculator">150 * (1/50)</gadget>
<output>3</output>

<result>3</result>