If a tourist bus goes to the first scenic spot with 30% fewer tourists, then the second scenic spot will increase another 30%. Is the number of people on the bus increased or decreased compared with the original one? How much has it increased or decreased?
一辆旅游车到第一个景点游客减少30%，则第二个景点时游客又增加30%，现在车上人数与原来相比是增加还是减少？增加或减少了多少？
<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">1 + (3/10)</gadget>
<output>13/10 = around 1.3</output>

<gadget id="calculator">1 * (7/10) * (13/10)</gadget>
<output>91/100 = around 0.91</output>

<gadget id="calculator">1 - (91/100)</gadget>
<output>9/100 = around 0.09</output>

<result>9/100 = around 0.09</result>