24 cars are evenly divided into two rows and parked on both sides of a road. Each car is 4 meters long, and the distance between two cars is 5 meters. How many meters is the length from the front of the first car to the tail of the last car (that is, the length of this road) ?
24辆小汽车平均分成两排停在一段公路两旁，每辆车长4米，每两辆车相距为5米，第一辆车头到最后一辆车尾长多少米(即这段公路长)？
<gadget id="calculator">24 / 2</gadget>
<output>12</output>

<gadget id="calculator">12 - 1</gadget>
<output>11</output>

<gadget id="calculator">11 * 5</gadget>
<output>55</output>

<gadget id="calculator">12 * 4</gadget>
<output>48</output>

<gadget id="calculator">55 + 48</gadget>
<output>103</output>

<result>103</result>