Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> b239778cbaac50985d8f6bb8b700ac5dd8f8a5faaf67d1b56b8a5249575a4d90:13:8
   |
13 |         let f1 = fee * I1B2sqr / scale * I2B1sqr / scale - I1B2;
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^