Acid soil can be amended with the help

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

(352 - ?) ÷ 8 = 2.5 X 40 - 444 ÷ 6

116 ÷ 280 of 1/2 + 3/5 × 5/3 = ?

36% of 250 + 26 ÷ 2 × ? = 207

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

(44 × 72 ÷ 6) ÷ 11 = (9² + ?) ÷ 3

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

9 ^{(? + 12)} = 3 ^{(14 + 17 - 11)}

26% of 650 + 15% of 660 – 26% of 450 = ?

√? = 32% of 900 + 48% of 50

8 × 25% of ? = 400

√(?) = (897 × 51) ÷ 1016.6