That math is off by a factor of ten. Here's another cut at the estimate.

Dimensions: 250 x 230 x 150

Tonnes/CuM: 2.38

Total tonnes: 20,507,657

gpt: 0.3

ounces: 198,461

Based on results to date from Butia, the 0.3 gpt assumption may be on the conservative side. The 1400x500 alteration zone is about 12x the size of the current target, so there is upside potential for size as well as grade. Butia is one of 19 prospects at Lavras do Sul, five have been drilled and four have yielded significant gold intersections.