What strategic move are Chinese EV companies making in

Simplify the given expression.

(1/4) of {6 ⁴ - 28 × 15 + 13 × 16 - 12.5 of 12 ² }

24% of 400 × 16% of ? = 384

135.37 – 50.24 + 629.09 – 199.50 = ? – 214.68 + 42.65

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

{250% of 46 + 16 ÷ (1/5)} ÷ 15 = ? ÷ 3 – 29

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

√(? - 212) - 84 = 81 - 13 X 9

25% of 300 + √(?) = 35% of 600 - 15% of 300

√10000 x √8100 - (50)² = √(?) + (80)²

2048 × 1824 ÷ 76 = (? - 212) × 64

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