100 is reduced by 30%, and then increased by 15%, what is the result?
100减少30%，再增加15%，结果是多少？
<gadget id="calculator">30 / 100</gadget>
<output>3/10 = around 0.3</output>

<gadget id="calculator">1 - (3/10)</gadget>
<output>7/10 = around 0.7</output>

<gadget id="calculator">100 * (7/10)</gadget>
<output>70</output>

<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">70 * (23/20)</gadget>
<output>161/2 = around 80.5</output>

<result>161/2 = around 80.5</result>