Calculate the rate of return

kind of urgent, thank you so much

In 1987, a Van Gogh painting Sunflowers (not reputed to be one of his best) sold at auction, net of fees, for $36 million. In 1889, 98 years earlier, the same painting sold for $125. Calculate the rate of return to the seller on this investment. What does this suggest about the merits of fine art as an investment? Here "rate of return" means "r