sum = 0
for i in range(7, 10):  
    sum =sum + i
    print('my sum:',sum)
#=============

sum = 0
for i in range(7, 10):  
    sum =sum + i
print('my sum:',sum)

#=================
sum = 0
for i in range(5, 11, 2):  
	sum += i
print("my sum:*",sum)

#----------------