Instructions: What will come in place of question mark (?) in the following questions?
[(5$$\sqrt{7}$$ + $$\sqrt{7}$$ ) × (4$$\sqrt{7}$$ + 8$$\sqrt{7}$$ )] - (19)2 = ?
5$$\frac{17}{37}$$ × 4$$\frac{51}{52}$$ × 11$$\frac{1}{7}$$ + 2$$\frac{3}{4}$$ = ?
Instructions: What approximate value should come in place of the question mark (?) in the following questions. (Note: You are not expected to calculate the exact value)
$$\frac{5}{8}$$ of 4011.33 + $$\frac{7}{10}$$ of 3411.22 = ?