Uncle Li transported 100 pieces of glass from A to B. According to regulations, if a piece of glass is safely transported to the destination, the shipping fee will be 3 yuan. If a piece of glass is broken during transportation, the compensation will be 5 yuan. At the time of settlement, Uncle Li paid a total of 260 yuan for shipping. How many pieces of glass were broken on the way?
李叔叔把100块玻璃由甲地运往乙地．按规定，把一块玻璃安全运到，可得运费3元．如果运输途中打碎-块玻璃，则要赔偿5元．在结算时李叔叔共出运费260元，问在途中打碎了几块玻璃？
<gadget id="calculator">100 * 3</gadget>
<output>300</output>

<gadget id="calculator">300 - 260</gadget>
<output>40</output>

<gadget id="calculator">3 + 5</gadget>
<output>8</output>

<gadget id="calculator">40 / 8</gadget>
<output>5</output>

<result>5</result>