def div_10(x):
a = x >> 3
b = a >> 2
c = a - b
return c
print("1 / 10 =", div_10(1))
print("4 / 10 =", div_10(4))
print("6 / 10 =", div_10(6))
print("9 / 10 =", div_10(9))
print("14 / 10 =", div_10(14))
print("15 / 10 =", div_10(15))
print("18 / 10 =", div_10(18))
print("254 / 10 =", div_10(254))
print("255 / 10 =", div_10(255))
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