? = 16.08 + 13.99 ×

16.01^{(? × 8.09 ÷ 16.09)} = 3.01 of 69.69 + 14.12 of 4.01 - 100.998 of 2.19

What approximate value will replace the question mark (?) in the following?

√3601 × √(224) ÷ √102 = ?

(? + 6.06^3.03 ) ÷ 10.08 + 21.89 × 6.97 = 1979.97 ÷ 10.96

29.81 % of 49.91 + 14.28% of 147.09 + 179.91 = ?³

12.03 x 4.21 +19.95% of 300.05 =  ?

(1120.45 ÷ 15.89) × 11.34 = ? × 4.78

89.87 × 3.21 + 60.32 = ? × (6.89 ² – 19.21) 

What will come in the place of question mark (?) in the given expression?

?² = {40% of (55² – 35² )} – 44