How solve equation with integral and exp

Hi, how i solve these equations in matlab

Ex 1) int(1/((2.635*10^14)*(exp(-14574.74/(436+166*x)))*(1-x)),x,0,0.97)

Ans = 0.117

Ex 2) int(373*(1+(1.5*x))/((373+(((7.81*10^4)*x)/(20+(19*x))))*(2*10^5)*(exp(-10300/(373+(((7.81*10^4)*x)/(20+(19*x))))))*0.196*((1-x)^2))),x,0,0.7)

Ans= 92107.6