A bridge is 160 meters long. It is planned to install 16 patterns on the railings on both sides of the bridge. The horizontal length of each pattern is 2.5 meters. The patterns near both ends of the bridge are 15 meters away from the end of the bridge. Find the two adjacent patterns. How many meters should the patterns be apart?
一座桥全长160米，计划在桥的两侧栏杆上各安装16块花纹图案，每块图案的横长为2.5米，靠近桥两头的图案距离桥端都是15米，求相邻两块图案之间应相隔几米？
<gadget id="calculator">15 * 2</gadget>
<output>30</output>

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

<gadget id="calculator">2.5 * 16</gadget>
<output>40</output>

<gadget id="calculator">130 - 40</gadget>
<output>90</output>

<gadget id="calculator">90 / 15</gadget>
<output>6</output>

<result>6</result>