Условие:

3800 * 40;
4200 * 60;
1090 * 700;
2900 * 300;
600 * 580;
700 * 402;
3070 * 80;
40300 * 20.

3800 * 40 = 152000;
4200 * 60 = 252000;
1090 * 700 = 763000;
2900 * 300 = 870000;
600 * 580 = 348000;
700 * 402 = 281400;
3070 * 80 = 245600;
40300 * 20 = 806000.