Răspuns:
464.255 sper ca te am ajutat
[tex]\it 42 205\cdot11=42205\cdot(10+1)=42205\cdot10+42205=422050+42205=464255[/tex]
Sau:
[tex]\it 42205\cdot\\ \rule{0.2}{0.2}\ 11\\ \rule{40}{0.6}\\\rule{0.2}{0.2}\ \ 42205\\42205\\ \rule{40}{0.6}\\464255[/tex]
