( 792,81 x 0,25 + 792,81 x 0,75 ) x ( 11 x 9 - 900 x 0,1 - 9 )
= 792,81 x 0
= 0
\(\left(792,81\times0,25+792,81\times0,75\right)\times\left(11\times9-900\times0,1-9\right)\)
\(=\left(792,81\times\left(0,25+0,75\right)\right)\times\left(11\times9-10\times9-9\right)\)
\(=(792,81\times1)\times\left(9\times\left(11-10-9\right)\right)\)
\(=792,81\times9\times\left(-8\right)\)
\(=-57082,32\)