Black-Scholes model

Question 1

d₁ = -2.3636

d_{2= -2.4676}

Please calculate N(d₁₎ and N(d₂₎

I know its through interpolation viaStandard Normal Probabilities but how do you do it ?

Question 2

_{d1 = -3.3827}

_{d2 = - 3.4488}

_{N(d1) and N(d2) = ??}