e[70]=d[70]/l[70]*0.5+(1-d[70]/l[70])*(1+e71) => e71=10.61
e71=l72/l71*(e72+1)+(1-l72/l71)*0.5
e[71]=l72/l[71]*(e72+1)+(1-l72/l[71])*0.5
=> e[71]=(e71-0.5)*l71/l[71]+0.5=10.08