Who was appointed as the State Election Commissioner of

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

25% of 2000 – 50% of 500 = 100% of ?

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

200 % of (6 1  ×  5  + ?) = 3% of  1 800 –  12 % of  75 0

36895 - 4256 - 2233 = ? 

60% of 250 + 14 × 10 - 210 = ?

654.056 + 28.9015 × 44.851 – 43.129 = ?

25% of 440 + 88 X (1/2)²  - 28 = 8 X ?

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

(1728)^(1/3) + √441 + √1089 = ? × 5 + 11

5.5 × 3.2 × 2.3 = ?

1.55 + 2.05 + 1.5 × 11 – 20% of 10.5 = ?