3 Выполни действия: a) 4609 + 27 397; б) 20 080 - 576; в) 5309 * 4800; г) 11 604 350 : 145.

a) \(\begin{array}{r}\) \(\phantom{0}\)4609 \\ +27397 \\ \(\hline\) 32006 \(\end{array}\) $$4609 + 27397 = 32006$$ б) \(\begin{array}{r}\) 20080 \\ -\(\phantom{0}\)576 \\ \(\hline\) 19504 \(\end{array}\) $$20080 - 576 = 19504$$ в) \(\begin{array}{r}\) \(\phantom{0000}\)5309 \\ \(\times\) \(\phantom{0}\)4800 \\ \(\hline\) \(\phantom{0}\)42472 \\ +21236 \(\phantom{0}\) \\ \(\hline\) 25483200 \(\end{array}\) $$5309 \cdot 4800 = 25483200$$ г) \(\begin{array}{c|l}\) 11604350 & 145 \\ \(\hline\) -1015 & 80030 \\ \(\hline\) 1454 & \\ -1450 \\ \(\hline\) 435 \\ -435 \\ \(\hline\) 0 \(\end{array}\) $$11604350 : 145 = 80030$$