2+3+(-4+5+6-7)+7+(-7+8+9-10)+10+(-10+11+12-13)+13+(-13+14+15-16)。。。+34÷2 = 101 × 17 = 1717 ..
(5/8+2/3)×(24 );10-4/7-(3/7)5/(7)×7/13×(1/5)7/9÷(11/5)+5/11×2/9