l4=Label(r,text="",font=("宋体",14),fg="red")

l4.place(x=140,y=160)

def js():

m=int(e1.get())

n=int(e2.get())

a = m

b = n

while n:

m,n = n, m % n

s=a * b // m

l4.config(text=str(s))

def qk():

e1.delete(0,END)

e2.delete(0,END)

l4.config(text="")