Answer :

To determine what 789 must be multiplied by to give 7,897,890, follow these steps:

1. Identify the given numbers: We need to find the multiplier that, when multiplied by 789, results in 7,897,890.

2. Set up the equation: We can represent this problem with a simple algebraic equation:
[tex]\[ 789 \times x = 7,897,890 \][/tex]
where [tex]\( x \)[/tex] is the unknown multiplier we need to find.

3. Isolate the variable: To find [tex]\( x \)[/tex], we need to isolate it on one side of the equation. We can do this by dividing both sides of the equation by 789:
[tex]\[ x = \frac{7,897,890}{789} \][/tex]

4. Perform the division: Execute the division to solve for [tex]\( x \)[/tex]:
[tex]\[ x = 10010 \][/tex]

5. Conclusion: The value of [tex]\( x \)[/tex], the multiplier, is 10,010. Hence, 789 must be multiplied by 10,010 to give 7,897,890.

Thus, 789 multiplied by 10,010 equals 7,897,890.