Imaginary lines connecting points of equal amount of

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

(286 ÷ 13 + 83) ÷ 15 × 8 + 84 = 400% of ?

41.66% of 888 + 66.66% of 1176 = ?² - ⁴√ 16  

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

(40% of ? × 4³ ) – 23² = 751 

458.32 - 563.32 + 659.32 =?

34 × 5 × 2 ÷ 6 + 7 × 5 + 13 = (?)× 6 – 754

What value should come in the place of (?) in the following questions?

22² + 32² – 508 = ? * 5

40 of 30% of 220 = ? + 790

Simplify the following expression:

(13)² + 6 × (19)² – 312 × 4 = ?