There are 111 computers in Lixin Primary School this year, an increase of 61 compared to last year. By what percentage is the increase in the number of computers this year compared to last year?
立新小学今年有计算机111台，比去年增加了61台，今年的计算机台数比去年增加了百分之几？
<gadget id="calculator">111 - 61</gadget>
<output>50</output>

<gadget id="calculator">61 / 50</gadget>
<output>61/50 = around 1.22</output>

<result>61/50 = around 1.22</result>