#!/usr/bin/python

if __name__ == '__main__':
    test = range(10)
    print "multiply by two"
    for i in test:
        print i,"* 2 = ",i << 1
    print "multiply by 3"
    for i in test:
        print i,"* 3 =",(i << 1) + i
    print "by 5"
    for i in test:
        print i,"*5=",i + (i << 2)
    print "by 7"
    for i in test:
        print i,"*7=2",i + (i << 1) + (i << 2)