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The number of significant figures is one.
One significant figure.
One significant figure
There is only one significant figure which is the 7. When zeros are placed before a number, they are not considered significant figures.
When multiplying numbers, the result should have the same number of significant figures as the original number with the fewest significant figures. In this case, 400 has one significant figure, and 185 has three significant figures. Therefore, the result of multiplying 400 by 185 will have one significant figure. The answer would be 70,000.