131/32 * 3 1/5 +(8 5/9 * 6/35 + 3 8/15) * 7/50

31/160×3+(8×1/3×2/7+8/5)×7/50
93/160+(2/21+8/5)×7/50
93/160+(16/21+8/5)×7/50
93/160+(80+168/105)×7/50
93/160+248/105×7/50
93/160+124/15×1/25
93/160+124/375
6975+3968/12000
10943/12000
ответ: ≈0.911917