(35 × 50 + 13 × 3 × 28 ÷ 5 ÷ 35 × 6 ÷ 10 - 100 × 23÷ 7 - 3 + 39 - 68 ÷ 14 - 30 × 45 - 12 ÷ 63 - 5 × 6 - 20+ 80)^2/100 - 10 × 81 ÷ 9 × 1/35 ÷ 5 + 26 ÷ 85 ÷100 + 10 × 25 × 10 ÷ 300 =