plis tolong di bantu ya no 1 sampai no 4

1. (25×6000) - (10×5800)
= 150000-58000
= Rp. 92000

2. ((150×5) - 15) : 49
= 735 : 49
= 15 kg

3. (750 - 150) : 15
= 600 : 15
= 40 liter

4. (10000:1000×310000) + (45:1×34000)
=3100000 + 1530000
= Rp. 4630000