cum se calculeaza aceasta operatie una sub alta pas cu pas(dau coroana) va rog

[tex]\it 0,15\cdot1,2+6,25:2,5=\dfrac{15}{100}\cdot\dfrac{12}{10}+\dfrac{625}{100}\cdot\dfrac{10}{25}=\dfrac{180}{1000}+\dfrac{250}{100}=\\ \\ \\ =\dfrac{18}{100}+\dfrac{250}{100}=\dfrac{268}{100}=2,68[/tex]