help with code

[Vitamin]

i am making a neato prog for math class that will do my home work, i want it do "FOIL" F=First O=outside I=inside L=last in the equation (X + 3)(X+5) i want it to come up with X^2 + 8X + 15

the code i put in is

SUB inter2
PRINT "...Welcome To The Intergrated 2 Math Portion..."
PRINT "Functions: 1. FOIL "
INPUT "Choice: ", f#

IF f# = 1 THEN PRINT "( X1 , Y1 )( X2 , Y2 )"
IF f# = 1 THEN INPUT "What is in front of X1? ", b1#
IF f# = 1 THEN INPUT "What is value of Y1?", a1#
IF f# = 1 THEN INPUT "What is in front of X2? ", b2#
IF f# = 1 THEN INPUT "What is value of Y2?", a2#
[glow=red,2,300]
IF f# = 1 THEN b1 * a1= x1*y1
if f# = 1 then b1 * a2 = x1*y2
if f# = 1 then a1 * b2 = y1*x2
if f# = 1 then a1 * y2 = y1*y2
[/glow]
IF f# > 1 THEN PRINT "***Invalid Option***"
IF f# > 1 THEN INPUT "Please Select 1: ", f#
END SUB

the glowing part is the problem, it highlights the first * in each line when scrolling thru them and says "Expected: End-Of-Statement"

please help, i have promoted it at school and people are willing to buy it once i get it done, and this is nessicary in my prog.....

[Vitamin]

Whoo hoo! nm guys, i got it figured out.... ;D ;D ;D ;D ;D ;D ;D ;D PARTY TIME!

[Akos]

Hm, you sell it?

Can't you sell my language analyser program on English classes? You would get 50% of the income!
;D ;D ;D
You find my "Lingua-meter" at: www.angelfire.com/ego/akos/languages.htm

[vitamin]

ya my math teacher said if he liked it (was previously a engineer and knows a ton of code, that and hes a math genious) he would advertise it in his classes and give me the money

[Ziggi]

First of all the logic in your program is false. Statements
from IF section checking for the same condition cause
checking if f# =1 no other value. So I don’t know how your program
can work efficiently ?