A group’s sales last year were 1 billion yuan, and this year it is expected to increase by 15%. What is the sales volume this year?
某集团去年的销售额是10亿元，今年预计增长15%，今年的销售额是多少亿元．
<gadget id="calculator">15 / 100</gadget>
<output>3/20 = around 0.15</output>

<gadget id="calculator">1 + (3/20)</gadget>
<output>23/20 = around 1.15</output>

<gadget id="calculator">10 * (23/20)</gadget>
<output>23/2 = around 11.5</output>

<result>23/2 = around 11.5</result>