A chemical fertilizer factory used 160 tons of coal last month, but this month it saved 30% compared to last month. How many tons of coal did it actually use this month?
某化肥厂上个月用煤160吨，这个月比上个月节约了30%，这个月实际用煤多少吨？
<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">160 * (7/10)</gadget>
<output>112</output>

<result>112</result>