There are not, so the question makes no sense.
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10*3 = 30 : One zero in the multiplicand, one in the product. Or 25*4 = 100 : No zeros in the multiplicand, two in the product.
Multiply 4 times 25 to get 100 and then add the two zeros to get 10000
25
299 zeros two hundred and ninety-nine zeros.
10 septillion.