1235469780•44+200= 354269+13(245•7890)=

1 235 469 780 * 44 + 200 = 54 360 670 520.

1 235 469 780 * 44 = 54 360 670 320;

54 360 670 320 + 200 = 54 360 670 520.

354 269 + 13 * (245 * 7 890) = 25 483 919.

245 * 7 890 = 1 933 050;

1 933 050 * 13 = 25 129 650;

25 129 650 + 354 269 = 25 483 919.