(8-7\15-8\15)/1\14 = =
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(8-7\15-8\15)/1\14==(8-7\15-8\15)/1\14==(8-7\15-8\15)/1\14==yf256984,(8-7/15-8/15)÷1/14=(8-1)×14=7×1
(8-7\15-8\15)/1\14 = =
(8-7\15-8\15)/1\14 = =
(8-7\15-8\15)/1\14 = =
yf256984,
(8-7/15-8/15)÷1/14
=(8-1)×14
=7×14
=98