Write 12430000 in expanded form

we know that

12,430,000 in expanded form is equal to

12,430,000 = 1 * (10,000,000) + 2 * (1,000,000) + 4 * (100,000) + 3 * (10,000)

12,430,000 = (10,000,000) + (2,000,000) + (400,000) + (30,000)

therefore

the answer is

(10,000,000) + (2,000,000) + (400,000) + (30,000)

tube or goog would be a great resource to with that question