1780 * 23 = 40940

 
7820 * 36 = 281520

 
607 * 250 = 151750

 
706 * 304 = 214624
$\snippet{name: column_multiplication, x: 706, y: 304}$
 
14490 : 70 * 31 = 207 * 31 = 6417
1) $\snippet{name: long_division, x: 14490, y: 70}$;
2) $\snippet{name: column_multiplication, x: 207, y: 31}$.
 
184200 : 600 * 67 = 307 * 67 = 20569
1) $\snippet{name: long_division, x: 184200, y: 600}$;
2) $\snippet{name: column_multiplication, x: 307, y: 67}$.