12=p*.4*.25

Solution for 12=p*.4*.25 equation:

Simplifying
12 = p * 0.4 * 0.25

Reorder the terms for easier multiplication:
12 = 0.4 * 0.25p

Multiply 0.4 * 0.25
12 = 0.1p

Solving
12 = 0.1p

Solving for variable 'p'.

Move all terms containing p to the left, all other terms to the right.

Add '-0.1p' to each side of the equation.
12 + -0.1p = 0.1p + -0.1p

Combine like terms: 0.1p + -0.1p = 0.0
12 + -0.1p = 0.0

Add '-12' to each side of the equation.
12 + -12 + -0.1p = 0.0 + -12

Combine like terms: 12 + -12 = 0
0 + -0.1p = 0.0 + -12
-0.1p = 0.0 + -12

Combine like terms: 0.0 + -12 = -12
-0.1p = -12

Divide each side by '-0.1'.
p = 120

Simplifying
p = 120