从上表可见，时局已变，若缺煤可市购铁锭，煤炭则用于自制金锭、虹锭、铜锭及银锭更为划算。

顺便计算下当前升级五星工具所需金额。

没错，升级五星工具现在需要15M金币了。

本期内容到此结束，下期再会！

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