The organization responsible for formulating Indian

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

√16 * ? = √144 + (18 * 4 ÷ 3)

1500 ÷ 15 + 1000 ÷ √100 + ? = 250 * 3

(60/15) × 25 + 15 ² – 18% of 200 = ? ²

40 of 30% of 220 = ? + 790

180 % of 45 + √144 × 8 = ?²  + 80 % of 70

?% of 18% of 2600 = 234

236.23 - 653.23 + 696.23 = ?

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

25% of 2000 – 50% of 500 = 100% of ?

82% of 400 + √(?) = 130% of 600 - 85% of 400