What should come in place of question mark (?) in the following questions ?
Expression : 3939 $$\div$$ 3 + 6363 $$\div$$ 3 - 9696$$\div$$6 = ?
= $$(\frac{3939}{3}) + (\frac{6363}{3}) - (\frac{9696}{6})$$
= $$1313 + 2121 - 1616$$
= $$3434 - 1616 = 1818$$
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