help.. sama caranya yg detail

Q₁ = 6x10⁻⁶ C
Q₂ = 6x10⁻⁶ C
k = 9x10⁹ Nm²/C²
r = 3 mm = 3x10⁻³ m

F = k.Q₁.Q₂ / r²
F = 9x10⁹.6x10⁻⁶.6x10⁻⁶ / (3x10⁻³)²
F = 9x10⁹.36x10⁻¹² / 9x10⁻⁶
F = 36x10⁻¹²⁺⁹⁻⁽⁻⁶⁾
F = 36x10⁻¹²⁺¹⁵
F = 36x10³
F = 3,6x10⁴ N