Question: Problem in calculation

My problem is: factoring G from c4s1 results in different value in c4s2. Why?

wfn := 12; win := 5; wun := 90; zd := .8; xd := 80; xfd := -500; xid := 12; x0d := 66; lamf := 11; lamu := 44; lami := .99; G := 6.7777; kxui := 10; kxif := 33; 
cg3 := evalf(-kxui*cos(wun*zd)*exp(lamu*(xid-x0d))*(exp(-2*lamf*xfd)*(kxif*lami-lamf)+kxif*lami+lamf)/(2*cos(win*zd)*(cosh(lami*xid)*(kxif*kxui*lami*lamu*(1+exp(-2*lamf*xfd))+lamf*lami*(1-exp(-2*lamf*xfd)))+sinh(lami*xid)*(kxif*lami^2*(1+exp(-2*lamf*xfd))+kxui*lamf*lamu*(1-exp(-2*lamf*xfd))))));
c4s1 := evalf(   exp(lami*xid)*cos(win*zd)*exp(lamu*x0d)*cg3*G*kxui*lamu+exp(lami*xid)*cos(win*zd)*exp(lamu*x0d)*cg3*G*lami+G*kxui*cos(wun*zd)*exp(lamu*xid)); 
c4s2 := evalf(G*(exp(lami*xid)*cos(win*zd)*exp(lamu*x0d)*cg3  *kxui*lamu+exp(lami*xid)*cos(win*zd)*exp(lamu*x0d)*cg3  *lami+  kxui*cos(wun*zd)*exp(lamu*xid)));
                                222
                            2 10   
                                222
                            1 10