Crumbling Scoria

76 x 0.74 = 56.24

0.74

186 84 x 0.002 = 37.368

0.002

x 0.004 = 0

0.004

x 0.004 = 0

0.004

x 0.003 = 0

0.003

x 0.003 = 0

0.003

x 0.007 = 0

0.007

x 0.191 = 0

0.191

x 0.003 = 0

0.003