10 PRINT "Input two numbers separated by"'"space(s) "
20 INPUT LINE a$
30 LET ll=10e10: LET ls=0: LET i=1
40 IF a$(i)=" " THEN LET ls=i: GO TO 60
50 LET ll=i
60 IF ls>ll THEN GO TO 80
70 LET i=i+1: GO TO 40
80 LET a=VAL a$( TO i): LET b=VAL a$(i TO )
90 PRINT a;" + ";b;" = ";a+b