Find the value of ‘x’ in the following expression:

2/5 of 3/4 of 7/9 of 7200 = ?

Simplify: 6(x³ − 2x² + 3x) − (x³ + 2x − 3).

20% of 1500 – 75% of 200 = 125% of ? 

The value of 15 × 14 – 30 + (3² + 17) is:

2/9 of 5/8 of 3/25 of ? = 40

140% of 9/8 of ? = 108% of 2800

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

1440 ÷ (6 × 4) + 2⁵ = ?

(744 ÷ 6) - (120/5) + 5.5% of 800 = ?²

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

(11/45) of 225 + 3 X 75 = ? X (72 ÷ 6 + 4)

116*2/3% of 18600 + 666*2/3% of 1290 = 457*1/7% of 1750 + 555*5/9% of 3150 + ?