In a certain code language ‘BATH’ is written as ‘542311’ and ‘FUND

In a certain code language ‘BATH’ is written as ‘542311’ and ‘FUND’ is written as ‘924177’. How will ‘GOLD’ be written in that language?
एक निश्चित कूट भाषा में ‘BATH’ को ‘542311’ औऱ ‘FUND’ को ‘924177’ लिखा जाता है। उस भाषा में ‘GOLD’ को कैसे लिखा जाएगा?
7, 15, 12, 4
10, 18, 15, 7