If you wanted to find an exact match, you could try aideal = r · b; this makes the a / b fraction equal to r · b / b = r. That said, r · b might not be an integer (or even a rational number), so even without the added constraint, the approach is usually a bust.
Thrifty Business (Spellgarden Games), a cozy thrift-store management sim that's coming to Steam this year. A demo's available now.
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传统汽车时代，整车制造相关技术及标准，皆掌握在外资车企手中，“市场换技术”是国内汽车产业的鲜明标签。
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