Izračunaj 22.5% od 31 od:
[(10002−1000⋅1940+9702)⋅(10002−1000⋅1998+9992)3402−1602+6502−2502]30.Rješenje
10022.5⋅31⋅[(10002−1000⋅1940+9702)⋅(10002−1000⋅1998+9992)(340+160)(340−160)+(650+250)(650−250)]30=
=1000225⋅31⋅[302⋅12500⋅180+900⋅400]30=
=100075⋅[9002⋅250⋅10⋅18+900⋅400]30=403⋅[9002500⋅36+900⋅400]30=
=403⋅[90050⋅6+30⋅20]30=
=403⋅[900300+600]30=403⋅[900900]30=403⋅130=403. 