Help with extra credit school assignment

Hello r/Matchematics! I have an extra credit assignment at school that says:

In 1985, a 5-1/4” double-sided floppy disk, storage capacity, 350 KB sold for $3.00.

Today, we can buy a USB drive, storage capacity, 16 GB, for about $3.88.

How much would a 16 GB USB cost in 1985 based on the cost of 350 KB floppy disk?

16 GB = 16,000,000 kilobytes, 16,000,000 / 350 * 3 (cost of floppy disk in 1985) = $137,142.85. Did I do this correctly?