$25\cdot 7\cdot 4=25\cdot 4\cdot 7=100\cdot 7=70025\backslash cdot\; 7\backslash cdot\; 4=25\backslash cdot\; 4\backslash cdot7=100\backslash cdot7=700$

$\underset{‾}{324\cdot 18}\phantom{2\cdot }324\phantom{69}{24}_1{6}_{3}2\backslash underline\{324\backslash cdot\; 18\}\; \backslash \backslash \; \backslash phantom\{2\backslash cdot\}324\; \backslash \backslash \; \backslash phantom\{69\; \}24\_1\; 6\_32$

$\phantom{+}3240\underset{‾}{+24_2{6}_{3}2}\phantom{+}5832\backslash phantom\{+\}3~~~2~~~4~~~0\; \backslash \backslash \; \backslash underline\{+2~~~4\_2~6\_3~~2\}\backslash \backslash \; \backslash phantom\{+\}5~~~8~~~3~~~2$