I given 3 million,I can use K250000 to buy bricks,K100,000 to buy some building materials like doors and windows and K150000 for 3 bags of cement and transport,K150,000 for buying 10 roofing sheets,and K350,000 for labours to the whole building. If we can calculate all it means we have used K1000000 the remaining K2000000 is a capital for the whole goods.