4)86×10318×12525×4442×2599×999×7845×38+38×5528×21+28×7937×23-23×738×46+64×3899×32+3246+46×59167×2+167×3+167×539×8+6×39-39×428×225-2×225-6×22565+73+135357+288+143272+68+28129+235+171+16517+145+23+35400-256-44517-53-47284-159-41258-42-16545-167-145478-47-178344-(144+37)236-(177+36)25×9×48×(125×13)(250×125)×(4×8)88×12572×125125×64×2542×125×8×525×4×88×125(12+50)×40125×(40-4)76×10318×12525×4442×2599×999×7845×37+37×5528×21+28×7917×23-23×738×46+64×3899×32+3246+46×59167×2+167×3+167×539×8+6×39-39×4360÷4÷9250÷5÷2600÷12÷5800÷5÷8480÷5÷48240÷5÷12420÷35117+392+60888×27+27×1287×53+87×477×75-7×25234―66―34528―53―47435-(135+189)167×25+32×25+2538×99+38147+147×9925×(4+8)108×7535×20175×9825×7×42×125×8×625×32×125125×8825×483500÷4÷25420÷35÷230+255+70282+41+15988×27+27×12125×64+125×3664×199+64528―53―47158+395+105