c) $$ 6891 imes 720 $$ d) $$ 208640 \div 160 $$

Question

c) $$ 6891 	imes 720 $$ d) $$ 208640 \div 160 $$

UpStudy AI · Accepted Answer

Sure, let's solve each problem step by step.

---

### **c) $$ 6891 \times 720 $$**

**Step 1: Break down the multiplication**
$$
6891 \times 720 = 6891 \times (700 + 20) = (6891 \times 700) + (6891 \times 20)
$$

**Step 2: Calculate each part separately**

1. **Calculate $$ 6891 \times 700 $$:**
$$
6891 \times 700 = 6891 \times 7 \times 100
$$
First, multiply by 7:
$$
6891 \times 7 = 48237
$$
Then, multiply by 100:
$$
48237 \times 100 = 4,\!823,\!700
$$

2. **Calculate $$ 6891 \times 20 $$:**
$$
6891 \times 20 = 6891 \times 2 \times 10
$$
First, multiply by 2:
$$
6891 \times 2 = 13,\!782
$$
Then, multiply by 10:
$$
13,\!782 \times 10 = 137,\!820
$$

**Step 3: Add the two parts together**
$$
4,\!823,\!700 + 137,\!820 = 4,\!961,\!520
$$

**Final Answer:**
$$
6891 \times 720 = 4,\!961,\!520
$$

---

### **d) $$ 208,\!640 \div 160 $$**

**Step 1: Simplify the division**

Divide both the numerator and the denominator by 10 to make the numbers smaller:
$$
\frac{208,\!640}{160} = \frac{20,\!864}{16}
$$

**Step 2: Perform the division**

$$
20,\!864 \div 16 = 1,\!304
$$

**Final Answer:**
$$
208,\!640 \div 160 = 1,\!304
$$

---

**Summary of Answers:**
- **c)** $$ 6891 \times 720 = 4,\!961,\!520 $$
- **d)** $$ 208,\!640 \div 160 = 1,\!304 $$
c) $$ 6891 \times 720 = 4,\!961,\!520 $$ d) $$ 208,\!640 \div 160 = 1,\!304 $$

c) \( 6891 \times 720 \) d) \( 208640 \div 160 \)

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