m=

n=

m⊕n = (m-n)10^(floor(lg(m+n))+1)+m+n

m = 6
n = 4
r: (m - n) * 10^(floor(lg(m + n)) + 1) + m + n
M = Textfield(m)
N = Textfield(n)
R: "risultato = " + r + ""