What is the first phase in the software development

(1120.45 ÷ 15.89) × 11.34 = ? × 4.78

(363.89% of 224.98 – 319.86% of 134.94) ÷ ? = √(134.88 ÷ 15.25)

( 1000)^1/3  × 10.11 × 4.97 ÷ 10.32 =? – 15.022

11.06 ² – 7.12 × 4.88 + 9.96 = 12.22 × ? 

59.978% of 800.315 - 229.95 = ? - 24.95% of 200.15

45.45 × 11.67 + 14399.88 ÷ 8.01 + 124.79 = ?

The greatest number that will divide 398,436, and 542 leaving 7, 11, and 15 as remainders, respectively, is:

22.11 × 4.98 + 23.03 × 5.12 – 32.95 + 96.9 × 5.02 =?

14.12 × 21.98 + 25.22% of 195.99 = ? × 50.9

12.06 × 19.02 + 12.94 × 14.87 + 152.09 = ?% of 498.98