456
x 803
-----
1368
+3648
------
366168
605
x 102
-----
1210
+605
------
61710
105
x 420
-----
0
+ 210
+420
------
44100
521
x 180
-----
0
+4168
+521
------
93780
180876
+251367
------
432243
432243 | 9
-42 | 48027
--
52
-48
--
42
-42
--
04
-0
--
43
-45
--
0
580000
- 35410
------
544590
544590 | 90
-540 | 6051
-----
459
-450
----
90
-90
--
0
Ответ: 456 ⋅ 803 = 366168; 605 ⋅ 102 = 61710; 105 ⋅ 420 = 44100; 521 ⋅ 180 = 93780; (180 876 + 251 367) : 9 = 48027; (580 000 − 35 410) : 90 = 6051