Compute the probability of absorption using the simulated chain

Plese help with this problem, I have the matrix setup:

p00=1;     p01=0;    p02=0;      p03=0;           p04=0;
p10=0.3;   p11=0;    p12=0.7;    p13=0;           p14=0;
p20=0;     p21=0.5;  p22=0;      p23=0.5;         p24=0;
p30=0;     p31=0;    p32=0.6;    p33=0;           p34=0.4;
p40=0;     p41=0;    p42=0;      p43=0;           p44=1;

- The problem: