138 cubic meter to gal conversion result above is displayed in three different forms: as a decimal (which could be rounded), in scientific notation (scientific form, standard index form or standard form in the United Kingdom) and as a fraction (exact result). Every display form has its own advantages and in different situations particular form is more convenient than another. For example usage of scientific notation when working with big numbers is recommended due to easier reading and comprehension. Usage of fractions is recommended when more precision is needed.
If we want to calculate how many Gallons are 138 Cubic Meters we have to multiply 138 by 125000000000 and divide the product by 473176473. So for 138 we have: (138 × 125000000000) ÷ 473176473 = 17250000000000 ÷ 473176473 = 36455.743225424 Gallons
So finally 138 cubic meter = 36455.743225424 gal