After the Sichuan earthquake, the rescue team went to the deep mountain villages on foot to rescue. In the first hour, he walked 30% of the whole journey. In the second hour, he walked 3 kilometers longer than in the first hour, and walked another 15 kilometers before reaching the village. How many kilometers did the rescue team walk from the start to the village? (Write out the solution process)
四川地震，抢险队员步行去深山村寨救援．第一小时走了全程的30%，第二小时比第一小时多走了3千米，又走了15千米才到达村寨．抢险队员从出发到村寨共走了多少千米？(写出解答过程)
<gadget id="calculator">18 / 0.4</gadget>
<output>45</output>

<result>45</result>