The Hongxing factory has 160 tons of coal in storage. Originally, it burned 1.5 tons per day. After 20 days of burning, it only burned 1.3 tons per day due to the adoption of coal-saving measures. How many days can the remaining coal burn?
红星工厂存煤160吨，原来每天烧1.5吨，烧了20天后，因采用节煤措施，每天只烧了1.3吨．剩下的煤还可以烧多少天？
<gadget id="calculator">1.5 * 20</gadget>
<output>30</output>

<gadget id="calculator">160 - 30</gadget>
<output>130</output>

<gadget id="calculator">130 / 1.3</gadget>
<output>100</output>

<result>100</result>